What if it had gone differently?
Every scenario here starts with something that really happened — an invention, a discovery, a decision, a war — and imagines one change rippling outward: what shifts immediately, what it means locally and globally, and how far the consequences could plausibly stretch.
Latest Scenarios
What If All Commercial Air Travel Was Grounded Worldwide for a Month?
When a single volcanic ash cloud shut down European airspace for about a week in 2010, it stranded millions of travelers and cost the airline industry an estimated $1.7 billion — and that was one region, for a matter of days. This scenario asks what a genuinely global, month-long version of that same kind of shutdown would actually mean.
Read the scenario →What If a Major City Genuinely Ran Out of Water?
Cape Town came close enough in 2018 that the city had an actual date on the calendar — 'Day Zero' — for when the taps would be switched off entirely. A combination of severe drought, rapid population growth, and aggressive last-minute conservation measures meant the date kept moving. It's a real scenario that has already almost happened, not a hypothetical one.
Read the scenario →What If a Major Solar Storm Knocked Out Power Grids Worldwide?
In 1859, a solar storm was strong enough to make telegraph operators' equipment spark and, in some cases, keep working after they'd disconnected the power. The entire technology it disrupted was the telegraph. A comparable storm hitting today's electricity-dependent world would be a fundamentally different kind of event.
Read the scenario →What If Baseball Had Never Become America's Pastime?
In the years right after the Civil War, several bat-and-ball games were competing for popularity across America — and baseball's specific rules weren't obviously destined to win. A well-organized New York club, a printed rulebook, and a war that scattered soldiers who'd learned the game across the whole country did as much to decide the outcome as anything about the sport itself.
Read the scenario →What If Chess Had Never Spread Beyond India?
Chess began as chaturanga, a four-player Indian war game representing infantry, cavalry, elephants, and chariots. It took a specific trade route through Persia and the Islamic world to reach Europe — and every stop along that thousand-year journey changed the rules, the pieces, and the game itself.
Read the scenario →What If the Electric Guitar Was Never Invented?
Guitarists in 1920s and 1930s dance bands had a basic problem: their instrument was too quiet to be heard over horns and drums. The solution — attaching a magnetic pickup to convert string vibration into an electrical signal — didn't just make guitars louder. It created an entirely new instrument with an entirely new sound.
Read the scenario →Browse by Category
Technology
Inventions and devices that quietly reshaped daily life — or might have, had they gone differently.
20 scenariosScience & Medicine
Discoveries that changed what was possible in the lab, the clinic, and the body.
19 scenariosWar & Politics
The decisions, battles, and treaties where a small shift could have redrawn the map entirely.
19 scenariosCulture & Society
The ideas, habits, and everyday goods that spread — or might never have spread — around the world.
18 scenariosHistory & Exploration
Ancient turning points and voyages where a different outcome would echo for centuries.
19 scenariosPresent & Future
Not history rewritten — the world exactly as it stands today, disrupted by one sudden change starting now.
18 scenariosArtificial Intelligence
Not history rewritten — today's AI, disrupted by one sudden capability or event starting now.
20 scenarios