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What If

''What If'' may refer to various works and concepts in film, television, comics, literature, music, science, , , and .

Film

Feature Films

The 2010 American drama What If..., directed by , explores themes of faith and life choices through the story of Ben Walker (played by ), a successful but unfulfilled man who receives a divine opportunity to glimpse an alternate life where he pursued his youthful dreams of ministry. The , produced by Pure Flix Entertainment, features a supporting cast including , , and , and emphasizes moral reflection on priorities and redemption. In 2012, the Greek drama What If... (original title: An...), written and directed by , depicts a young man's fateful night in crisis-era , where a simple decision to go out or stay in determines whether he meets the love of his life, . Starring Papakaliatis alongside Zorou and Notis Pitsilos, the film blends romance and social commentary on economic uncertainty, earning acclaim for its at the Film Academy Awards. The 2013 Canadian-Irish romantic comedy (also known as The F Word in some regions), directed by , follows Wallace (), a med school dropout sworn off romance, who develops feelings for his Chantry (), an animator in a committed relationship, testing the boundaries of platonic friendship. Adapted from the play Toothpaste and Cigars by T.J. Dawe and Michael Rinaldi, the film includes supporting performances by , , and , and premiered at the to positive reviews for its witty dialogue and relatable exploration of .

Short and Documentary Films

The short and documentary films titled often explore hypothetical scenarios, personal reflections, and societal challenges through concise, experimental formats that blend narrative , , and factual inquiry, typically running under to emphasize intimate, thought-provoking storytelling. These works distinguish themselves by prioritizing educational depth or artistic innovation over extended plots, drawing on "" premises to examine , social inequities, and cultural histories. One prominent example is the 2012 short film , directed by Max Giwa and Dania Pasquini, which adapts Rudyard Kipling's poem "If—" into a dramatic narrative following a young boy navigating life's trials to embody virtues like and . Clocking in at approximately 10 minutes, the film uses minimalist production by Films and to create an experimental visual poem that encourages viewers to contemplate personal growth amid adversity, earning praise for its inspirational tone at short film festivals. Its educational aspect lies in translating literary hypotheticals—such as maintaining composure in crisis—into accessible, motivational cinema. In the documentary realm, (2019), a 15-minute short directed by Noah Berlow, tackles the "what if" of stable by profiling families affected by in , produced in collaboration with the Illumination Foundation. The film experimentally interweaves personal testimonies with data on childhood trauma's long-term health impacts, advocating for preventive interventions to break cycles of instability, and screened at festivals like the Santa Fe International Film Festival to raise awareness on urban social issues. This work highlights documentary filmmaking's role in educational , using concise runtime to challenge stereotypes and propose actionable solutions. Another influential entry is What If…? A Film About Judith Merril (1998), a 60-minute documentary directed by Helene Klodawsky, which examines the science fiction genre's "golden age" through the life of pioneering author and editor Judith Merril. Filmed shortly before Merril's death, it features her interviews reflecting on using speculative "what if" narratives to critique McCarthy-era politics and envision gender equality in space exploration, produced by Imageries and broadcast on Canadian television. The film's experimental structure blends archival footage, expert commentary, and Merril's personal archives to educate on sci-fi's socio-political roots, securing awards including the Gold Prize at the 1999 Chicago International Television Festival and Best Portrait at the 17th International Festival of Films on Art in Montreal. More recently, WHAT IF? (2022), a 7-minute short documentary directed by Cali Gilbert under Tower 15 Productions, poses post-pandemic questions about global unity and equity, featuring interviews with diverse voices on overcoming social divides to foster a "New Earth." This experimental piece, which premiered at the MY HERO International Film Festival, uses quick-cut visuals and real-world testimonials to educationally explore hypothetical societal resets, emphasizing themes of equality and opportunity amid crisis. Its brevity amplifies impact, aligning with the genre's tradition of prompting viewers to reimagine collective futures.

Television

Series

The "What/If" miniseries, created by Mike Kelley for , premiered on May 24, 2019, and consists of a single 10-episode season exploring interconnected moral dilemmas through hypothetical scenarios posed by a mysterious venture capitalist, Anne Montgomery, played by . Each episode runs approximately 40-50 minutes and presents alternate outcomes to ethical quandaries faced by young professionals, blending thriller elements with anthology-style storytelling that ties back to Montgomery's manipulative influence. The series features a supporting cast including as Lisa Donovan, , and , and received mixed critical reception, with praise for Zellweger's charismatic yet sinister performance but criticism for its convoluted plot and soapy tone; it holds a 44% approval rating on from 32 reviews. In contrast, "What If...?" was an American animated anthology television series in the Marvel Cinematic Universe (MCU) on Disney+, created by A.C. Bradley and produced by Marvel Studios Animation, which debuted on August 11, 2021, and reimagines key MCU events in multiverse timelines narrated by the omnipotent Watcher. Jeffrey Wright voices the Watcher across all seasons, with MCU actors reprising roles such as Hayley Atwell as Peggy Carter (Captain Carter), Chris Hemsworth as Thor, and Samuel L. Jackson as Nick Fury, emphasizing stylistic variety from noir to cosmic horror in episodes typically lasting 25-40 minutes. The series draws brief inspiration from Marvel Comics' "What If?" anthology, adapting its concept of alternate histories to the MCU framework. Season 1 comprises nine episodes, including the premiere "What If... Captain Carter Were the First Avenger?," where Peggy Carter receives the Super Soldier Serum instead of Steve Rogers, leading to a divergent World War II narrative and the formation of an alternate Avengers team. Season 2, released December 22-30, 2023, also features nine episodes with bolder premises like "What If... Nebula Joined the Nova Corps?" and introduces holiday-themed multiverse crossovers, earning acclaim for its animation and voice performances with an IMDb rating of 7.3/10 overall. The third and final season, airing December 22–29, 2024, consists of eight episodes directed by Bryan Andrews and Stephan Franck, exploring scenarios such as "What If... The Hulk Fought the Mech Avengers?" and concluding major arcs like the Watcher's trial, while incorporating voices from Sebastian Stan, Ming-Na Wen, and others to tie into broader MCU lore; it received generally positive reviews, holding an 80% approval rating on Rotten Tomatoes.

Specials and Episodes

"What If..." is a ten-part web series produced by ABC, serving as a crossover between the soap operas General Hospital, All My Children, and One Life to Live. Executive produced by Jill Farren Phelps and directed by Frank Valentini, it premiered on ABC.com and SoapNet.com on July 12, 2010, with the final episode airing on August 30, 2010. Each short episode, typically 5-7 minutes long, presented hypothetical scenarios where characters from the different shows interacted in unexpected ways, blending drama and lighthearted "what if" premises to appeal to fans of the interconnected ABC soap universe. The series concluded with a finale featuring John McBain from One Life to Live and Sam McCall from General Hospital. It received the 2011 Daytime Emmy Award for Outstanding New Approaches - Daytime Entertainment, recognizing its innovative use of web content to expand soap opera storytelling. Key episodes included "Pilot," where Erica Kane (All My Children, played by Susan Lucci) encounters Sonny Corinthos (General Hospital, played by Maurice Benard) in a tense bar meeting; "Take Me There," featuring Todd Manning (One Life to Live, played by Roger Howarth) crossing paths with Carly Corinthos (General Hospital, played by Laura Wright); and "Learning to Fly," in which Maxie Jones (General Hospital, played by Kirsten Storms) teams up with Rex Balsom (One Life to Live, played by John-Paul Lavoisier) for a comedic adventure. Other installments explored pairings like Greenlee Smythe (All My Children) with John McBain (One Life to Live) and Krystal Carey (All My Children) with Lucky Spencer (General Hospital). These vignettes highlighted character chemistry across shows, often resolving in humorous or dramatic twists without affecting the main series' continuity. In the realm of educational television, PBS Digital Studios produced several standalone specials under the Space Time banner that delved into hypothetical scientific and historical questions. The August 24, 2023, episode "What If Space is Not Empty?" examined theories, proposing that at the Planck scale might consist of fluctuating black holes and wormholes rather than a smooth vacuum, hosted by physicist Matt O'Dowd with visuals from Digital Studios. Similarly, the January 4, 2024, special "What if Humans Are Not Earth's First Civilization?" explored the , suggesting evidence for pre-human industrial societies through geological anomalies like carbon isotope spikes, challenging conventional human history narratives while emphasizing the lack of direct proof. These episodes, each around 15-20 minutes, prioritize conceptual explanations backed by peer-reviewed physics and , airing on platforms and without ongoing serialization. Notable pilots and holiday specials titled "What If" have also appeared in limited formats. For instance, the 2019 Netflix limited series What/If began with a pilot episode introducing a thriller anthology structure, where each installment posed moral "what if" dilemmas, such as a biotech entrepreneur (Renée Zellweger) offering a Faustian bargain to a couple, written by Mike Daniels and directed by Adam Bernstein. Though structured as a 10-episode arc, its standalone episode conceit influenced later hypothetical-driven TV. In a holiday context, Marvel's What If...? featured the December 24, 2023, episode "What If... Happy Hogan Saved Christmas?," a self-contained animated special depicting security chief Happy Hogan (voiced by Jon Favreau) thwarting a holiday heist at Avengers Tower, blending action with festive themes in a multiverse variant. This episode aired as part of Disney+ programming, emphasizing whimsical alternate realities without tying into broader arcs.

Comics

Marvel Series

The Marvel Comics "What If?" series, launched in February 1977 and edited by Roy Thomas, explores hypothetical alternate universe scenarios diverging from key events in the Marvel Universe, narrated primarily by the cosmic entity Uatu the Watcher. Thomas conceived the anthology format to delve into "what if" questions that fans often pondered, such as alterations to major storylines involving iconic characters, allowing creators to experiment beyond main continuity while maintaining ties to established lore. The debut issue, "What If Spider-Man Had Joined the Fantastic Four?", reimagines Peter Parker's decision after the events of The Amazing Spider-Man #112, where he accepts Reed Richards' offer to join the team, leading to the formation of the "Fantastic Five" and subsequent conflicts with villains like Doctor Doom and Namor. This story, penciled by Jim Craig and inked by Joe Sinnott with contributions from John Romita Sr., set the tone for the series' blend of adventure, tragedy, and multiversal exploration. John Byrne inked some early issues, such as #5. The series' first volume ran from 1977 to 1984, producing 47 issues that covered divergences like "What If the Hulk Had Become a Hero?" and "What If Phoenix Had Not Died?", often featuring artwork by notable talents such as Mike Nasser, who contributed to issues exploring high-stakes alternate outcomes for characters like the Hulk. Volume 2, published from 1989 to 1998, expanded to another 47 issues, revisiting and revising earlier concepts while introducing new ones, such as "What If the Alien Costume Had Possessed Spider-Man?" and "What If Venom Had Possessed the Hulk?", with a focus on darker, more mature themes amid Marvel's evolving editorial landscape. Subsequent iterations under Volume 3 in 2005 shifted to a miniseries and one-shot format, releasing five key issues that interrogated post-Civil War scenarios and other modern arcs, emphasizing consequences of major crossovers. These volumes collectively established "What If?" as a cornerstone of Marvel's multiverse storytelling, influencing later imprints like the Ultimate Universe and inspiring the Disney+ animated series through its framework of narrative divergence. Following a hiatus, "What If?" resumed in 2006-2007 with additional one-shots and limited series, such as explorations of Iron Man's origins and X-Men divergences. Recent iterations include the 2022 miniseries What If...? Miles Morales (5 issues), which explores Miles gaining powers from Captain America, Wolverine, Hulk, and Thor; What If...? Dark (6 one-shots, 2023), revisiting stories with darker twists like Loki wielding Mjolnir; What If...? Venom (5 issues, 2024), depicting the symbiote bonding with hosts like She-Hulk and Doctor Strange; and Marvel & Disney: What If...? (7 issues, July 2024–July 2025), crossing over Disney characters (e.g., Donald Duck as Wolverine) with Marvel elements, underscoring the enduring appeal of speculative storytelling in comics.)

Other Comic Works

DC Comics' Elseworlds imprint, launched in 1989, serves as an occasional series of standalone stories exploring hypothetical scenarios outside the main DC Universe continuity, akin to alternate history narratives in superhero comics. These tales reimagine iconic characters in unconventional settings or with altered origins, emphasizing creative divergences from canon. For instance, the 1991 one-shot Batman & Dracula: Red Rain depicts Batman transforming into a vampire to combat Dracula's invasion of Gotham City, blending gothic horror with superhero action in a three-part trilogy that continued with Bloodstorm (1994) and Lord of the Vampires (1998). The imprint's revival was announced in 2023, with new titles like Gotham by Gaslight: The Kryptonian Age (6 issues, August 2024–January 2025) expanding the gothic world with elements involving Superman in a steampunk era, signaling ongoing interest in such speculative storytelling. Independent creators have also utilized "What If" titles to delve into personal and societal hypotheticals through visual narratives, often in self-contained graphic novels that prioritize emotional introspection over genre tropes. In What If We Were... (2019), French cartoonist Axelle Lenoir illustrates the imaginative game of two teenage best friends, Nathalie and Marie, who pose "what if" questions about alternate lives—such as becoming animals or historical figures—to cope with boredom and explore identity, published by Graphic Universe as a young adult graphic novel blending humor and whimsy. Similarly, Barrie Arliss's What IF: An Infertile Graphic Novel (2019), self-published through her personal imprint, chronicles her real-life fertility struggles, framing IVF treatments and emotional turmoil as a series of "what if" reflections on family and resilience, offering a raw, autobiographical lens on reproductive challenges. Post-2015 webcomics and graphic novels under "What If" banners have increasingly embraced anthology formats and to address contemporary issues, often through crowdfunded or small-press efforts. The UK-based What If? Stories collective released Hendricks (2022), a -mystery graphic novel series starting with via , following a small-town deputy's investigations into "what if" scenarios involving and hidden truths, emphasizing with contributions from multiple artists. In a more politically charged vein, 1/6: The Graphic Novel (2023), written by Alan Jenkins and Gan Golan with art by Will Rosado and published by OneSixComics, poses the dire hypothetical of a successful , 2021, U.S. insurrection, using stark illustrations to warn of authoritarian consequences in a dystopian . These works highlight how non-corporate creators leverage the "what if" premise for diverse, impactful visual storytelling.

Literature

Books and Anthologies

The "What If?" series of anthologies edited by Robert Cowley presents counterfactual explorations of historical events through essays by leading historians, emphasizing military and political turning points. The first volume, What If? The World's Foremost Military Historians Imagine What Might Have Been, published in 1999 by , features twenty original essays and fourteen sidebars examining alternate outcomes in global spanning over 2,500 years. Contributors such as , , and analyze scenarios like "What if the Japanese had won the ?" by Theodore F. Cook, which posits a prolonged and potential shifts in postwar . Other essays cover events from the in 701 B.C. to crises in and . The series continued with What If? 2: Eminent Historians Imagine What Might Have Been, released in 2001 by Putnam, expanding to twenty-five essays on non-military contingencies across world history. Edited by Cowley, it includes contributions from historians like and Cecelia Holland, addressing questions such as "What if had been assassinated in 1933?" which speculates on altered U.S. responses to the and . The volume broadens the scope beyond warfare, incorporating political and social divergences like the survival of or a different outcome in the 1521 conquest of the . A third installment, What Ifs? of American History: Eminent Historians Imagine What Might Have Been, published in 2003 by Putnam, narrows the focus to seventeen essays on U.S.-centric counterfactuals, maintaining the series' emphasis on expert analysis. Cowley curated pieces from authors including and , exploring pivotal moments like "What if the South had won the ?" and the implications of Robert E. Lee's lost during the Antietam campaign. This volume highlights the series' impact on popularizing , with essays drawing on primary sources to assess long-term societal changes. In recent years, similar anthologies have emerged, such as the … Book of Alternative American History published by Future Publishing as part of the All About History series, with editions released in 2023 and a third edition in 2025. This collection compiles speculative essays on U.S. events, including "What if China had discovered America first?" and "What if John F. Kennedy had survived his assassination?", using visual aids and historian insights to illustrate divergent timelines in politics, exploration, and civil rights. It reflects ongoing interest in counterfactual narratives for understanding American exceptionalism and policy decisions.

Short Stories

One of the most notable standalone short stories titled "What If—" in the genre is Isaac Asimov's 1952 work, first published in the Summer issue of Fantastic magazine. The story centers on , a professional writer, and his wife Livvy, who are traveling by train to . Struggling with , discusses his difficulty in generating fresh ideas for his next tale. To alleviate the boredom of the journey, the couple engages in a playful game of speculation, pondering alternate outcomes to key moments in their shared history—such as what if they had never attended a particular party where they met, or what if had pursued a different career path. These hypotheticals gradually reveal deeper philosophical layers about choice, regret, and the nature of reality, ultimately inspiring with a concept for a story involving branching timelines. Asimov uses this simple premise to explore the core appeal of as a literature of imaginative possibility, blending domestic dialogue with speculative introspection in a concise narrative that runs under 5,000 words. The story's publication history reflects its enduring place in Asimov's oeuvre. Originally appearing in Fantastic—a Ziff-Davis pulp magazine known for its mix of science fiction and fantasy—"What If—" marked an early example of Asimov's shift toward more introspective, idea-driven shorts following his Foundation series. It was later reprinted in Asimov's 1969 collection Nightfall and Other Stories (Doubleday), where it appeared alongside classics like "Nightfall" and "The Last Question," cementing its status as a representative piece of mid-20th-century speculative fiction. Further inclusions came in The Complete Stories, Volume 1 (1990, Doubleday), the latter compiling over 60 of his early works and earning a 1992 Locus Award for best collection. Critics have praised the tale for its economical style and meta-commentary on the genre, with Asimov himself noting in the foreword to Nightfall and Other Stories that it captures the "what if" essence that fuels all science fiction. Though not among Asimov's most famous works, "What If—" exemplifies how short fiction can distill complex themes like alternate histories into accessible, character-focused narratives, influencing later writers in the alternate-reality subgenre.

Music

Albums

Several albums have been released under the title "What If" or close variants, spanning genres from to pop and rock, often exploring themes of and possibility through their song selections. These works highlight diverse artistic visions, with prowess in fusion albums and vocal-driven narratives in pop and rock releases. The ' What If, released in March 1978 by , is a seminal jazz-rock album featuring intricate compositions by the Georgia-based band, known for blending , progressive elements, and virtuosic guitar work from . Produced by the band with engineering by Rodney Mills, it peaked at No. 98 on the chart, establishing the group's reputation in the fusion scene. The album's eight tracks emphasize technical improvisation and melodic exploration, without vocals.
TrackTitleDuration
1Take It Off the Top4:07
27:38
35:03
4Travel Tunes4:38
5Sunset Road4:25
6G. G. Train3:49
7Little Maggie5:32
8Hamba Sa4:48
Tommy Shaw's , his second solo following his stint with , was issued in 1985 by and leans into rock with pop sensibilities, showcasing Shaw's songwriting on themes of relationships and . Co-produced by Shaw and Mike Stone, it featured contributions from musicians like on guitar and received positive reviews for its melodic hooks, though it did not achieve major commercial success, peaking outside the top 100. The 10-track highlights Shaw's and guitar solos.
TrackTitleDuration
1Jealousy4:47
2Remo's Theme ()4:23
3Reach for the Bottle5:45
4Friendly Advice3:27
53:34
64:02
7True Confessions3:52
8Count on You4:26
9Love You Like I Never Loved Before3:58
10Only the Strong Survive4:02
The self-titled debut by the American rock supergroup —featuring vocalist Tommy Funderburk, guitarist , and bassist —was released in 1987 by . Produced by Richard Landis, the album blends melodic rock with influences, drawing praise for its polished production and anthemic choruses, though it remained a cult favorite without significant chart impact. Its nine tracks focus on romantic and adventurous themes, supported by session players like on percussion.
TrackTitleDuration
1What If4:48
2If This Is Love4:04
3Perfect World4:36
4One Look3:36
5Ride the Hurricane3:49
6She Rocked My World4:08
7Love Is a Fire5:19
8When Right Is Wrong4:48
9Turn and Walk Away4:21
Mr. Big's What If..., the hard rock band's seventh studio album, came out in January 2011 via Frontiers Records, reuniting the classic lineup of Eric Martin, Paul Gilbert, Billy Sheehan, and Matt Sorum (replacing Pat Torpey on drums for some tracks). Produced by Jay Ruston, it delivered high-energy riffs and harmonies, earning acclaim for revitalizing the band's sound and debuting at No. 22 on the Japanese Oricon chart. The 12 songs mix classic rock with modern production, emphasizing Gilbert's guitar virtuosity.
TrackTitleDuration
1Undertow4:48
2American Beauty3:44
3Stranger in My Life4:25
4Nobody Left to Blame4:20
5Still Ain't Enough for Me3:04
64:10
7As Far as I Can Tell4:24
8The Long Way Down4:11
9Things I Never Said3:07
10Around the World3:37
11I'll Never Get Over This4:44
12All the Way to the Gutter6:08
The 's , released August 18, 2017, by , fuses , jazz, Americana, and R&B under the leadership of dobro master , with bandmates like Mike Seal on guitar and Christian McQueen on . Self-produced by Douglas, the album garnered critical praise for its genre-blending innovation, with reviews highlighting its technical depth and emotional range; it reached No. 1 on the chart. The 11 instrumental and vocal tracks showcase Douglas's resonant tones.
TrackTitleDuration
1Cave Bop4:27
2Unfolding5:05
32:194:30
4What If5:33
5Hey Joe4:56
6Battle Stick3:58
7Go Ahead and Leave4:13
8Butcher Boy3:50
9Someday4:32
10Little Georgia Rose4:05
11Road to Medina4:21
Alexander Stewart's What If?, the Canadian pop singer's sophomore studio album, was released on October 24, 2025, via Arista Records, following his 2024 debut bleeding heart. Produced by various collaborators including Adam Yaron, Andrew Goldstein, and Phil Cook, it explores personal vulnerability and relationships through electronic-tinged pop, receiving attention for its relatable lyrics and streaming success. The 12-track effort marks Stewart's growth as a TikTok-originated artist into mainstream pop.
TrackTitleDuration
1Not Ready Yet2:45
2Let Me In3:02
3Friends Don't2:58
4The Way a Heart Breaks3:10
5Pathetic2:50
6Scared of Myself3:15
72:55
8Say You'll Stay3:08
9If I Die Tonight3:20
10Out of My Mind2:48
113:05
123:12

Songs

Several notable songs titled "What If" have been recorded by artists across , pop, and genres, often exploring introspective themes such as , , and hypothetical scenarios. These tracks, typically released as singles or cuts, highlight the title's versatility in conveying emotional "what if" dilemmas in personal relationships and . Creed's "What If," a post-grunge rock ballad released as a single on January 31, 2000, from their second studio album Human Clay, confronts themes of oppression, hatred, and the temptation of vengeance. Frontman Scott Stapp's lyrics pose rhetorical questions about retaliation and moral consequences, including lines like "What if I avenged? What if eye for an eye? I've seen the wicked fruit of your vine," reflecting on the destructive cycle of resentment toward critics and adversaries. The song peaked at number 13 on the Billboard Mainstream Rock chart, underscoring its impact in the late-1990s hard rock scene. Coldplay's "What If," an electronic pop track from their 2005 album X&Y, examines hypothetical fears in a romantic relationship, capturing the anxiety of potential loss and existential doubt. Chris Martin's vocals navigate abstract scenarios, such as "What if there was no light? Nothing wrong, nothing right? What if you should decide that you don't want me anymore?" to evoke vulnerability and the fragility of connection. Produced with orchestral elements, the song contributed to X&Y's global success, selling over 13 million copies worldwide. Kate Winslet's "What If," a piano-driven pop released in 2001 as her debut single, delves into post-breakup regret and the longing for alternate outcomes in love. The lyrics portray emotional weight and hindsight, with verses like "Here I stand alone with this weight upon my heart and it will not go away / In my head I keep on looking back, right back to the start," emphasizing missed chances and the pain of separation. Recorded during a break from , it reached number six on the and number one in , marking a brief but successful foray into music for the actress. In 2011, released "What If," an acoustic pop song from her third album All of You, which imagines ideal romantic compatibility amid everyday encounters. The upbeat yet contemplative lyrics ask, "What if we were made for each other? Born to become best friends and lovers," blending with the thrill of unspoken attraction. Co-written with and Jason Reeves, it exemplifies Caillat's signature laid-back style and peaked at number 77 on the Hot 100. More recently, emerging German singer Myle, featuring ISAAK, released "What If" as a single on June 20, 2025, a track addressing overthinking and emotional paralysis in budding relationships. The chorus confronts internal fears with "I'm such an overthinker, fear inside, it pull the trigger / Always shoot me down," urging a break from self-sabotage. Produced in collaboration, the song quickly gained traction on streaming platforms and supporting Myle's rising profile in .

Other Uses

Science and Philosophy

In scientific contexts, the phrase "what if" often manifests through thought experiments that probe the boundaries of physical theories, particularly in . A seminal example is Erwin Schrödinger's 1935 thought experiment known as , which illustrates the paradoxical implications of for macroscopic objects. In this scenario, a cat is placed in a sealed box with a radioactive atom, a , and a of ; if the atom decays within a given time, the counter triggers the poison, killing the cat. According to the of , the atom exists in a superposition of decayed and undecayed states until observed, entangling the cat in a superposition of alive and dead states as well. This paradox underscores the in , questioning how and when superposition collapses into definite outcomes, and highlights the apparent absurdity of applying quantum principles to everyday scales without a clear boundary between microscopic and macroscopic realms. The experiment, originally devised to critique the 's reliance on observation, has influenced ongoing debates about decoherence and alternative interpretations like the many-worlds theory. Philosophically, "what if" scenarios align with the analysis of counterfactual conditionals—statements about how the world might have been different under altered circumstances. David Lewis's 1973 framework in Counterfactuals provides a rigorous semantics for these using s, where a counterfactual like "If A had occurred, then C would have" is true if C holds in the closest to the actual one where A is true. Lewis argues that closeness is determined by similarity metrics, such as minimizing spatiotemporal differences and preserving laws of nature, allowing counterfactuals to ground and without invoking primitive counterfactual facts. This possible worlds approach resolves issues in earlier theories, like those of , by treating counterfactuals as indicative of objective resemblances among worlds, influencing fields from metaphysics to . Recent discussions in 2025 have extended "" explorations to within quantum physics, emphasizing branching realities as resolutions to superposition paradoxes like . In the , every quantum measurement spawns parallel universes, each realizing a possible outcome, framing "" as actualized branches rather than mere hypotheticals. A philosophical to this posits three variants—logically possible worlds, quantum (Everettian), and inflationary—arguing that they provide a coherent for quantum probabilities without collapse, though empirical testability remains challenging. These developments, building on Everett's 1957 formulation, continue to fuel debates on the of possibility in physics.

Business and Technology

In and , "what if" analysis refers to systematic methods for exploring hypothetical scenarios to inform , , and . These tools enable professionals to model potential outcomes based on changes, supporting in fields like , , and operations. Unlike purely theoretical explorations, these applications emphasize practical, data-driven implementations within software and methodologies. One prominent example is the what-if analysis feature in , introduced in the as part of the spreadsheet's scenario modeling capabilities. Excel's what-if tools, first appearing in version 5.0 in 1993, allow users to perform sensitivity analyses without altering original data. The process begins with creating a data : users select a range of input cells (e.g., variables like interest rates or sales volumes) and an output cell (e.g., total profit), then populate the with varying input values to generate corresponding outputs, revealing trends such as how profit margins shift under different economic conditions. Another key component is Goal Seek, which iteratively adjusts an input value to achieve a desired output; for instance, a might use it to determine the required sales target to meet a goal, by setting the formula cell to the target value and the changing cell as the variable. These features have become staples in , integrated into Excel's Analysis ToolPak add-in for more advanced simulations. In and , (FMEA) represents a structured what-if approach to preemptively identify and mitigate risks. Developed by the U.S. military in the 1940s during for reliability assessments in complex systems like , FMEA was formalized in military standards such as MIL-P-1629 in 1949. The process involves several steps: first, assembling a to brainstorm potential failure modes (e.g., a component overheating in an ); second, assessing each mode's severity (impact on or function, rated 1-10), occurrence likelihood (, rated 1-10), and detection difficulty (ease of identifying the failure, rated 1-10); third, calculating the Risk Priority Number (RPN) as severity × occurrence × detection to prioritize risks; and finally, developing corrective actions to reduce high RPNs, such as redesigning parts or adding sensors. For example, in the aerospace industry, applied FMEA during the development of the 787 Dreamliner to evaluate failure modes, leading to enhanced thermal management systems that prevented potential fires. Widely adopted in automotive standards like AIAG's manual since the 1970s and ISO 9001 certifications, FMEA has evolved into variants like Design FMEA (DFMEA) for product development and Process FMEA (PFMEA) for manufacturing, reducing defects by up to 50% in some implementations. Advancements in have elevated what-if simulations in technology, particularly through in as of 2024. These AI-driven methods build on traditional what-if principles but automate , drawing briefly from philosophical hypotheticals to frame real-world contingencies.

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