A stressful job that can’t be quit. A relationship that’s as painful as it is loving. Life serves up many problems with either no solution or only imperfect solutions that seem either just as bad or ...

From “impossible” puzzles to machine‑readable proofs The most striking shift is that AI is now solving problems that experts once labeled “impossible” for computers, at least in practice. Recent work ...

"The difficulty lies, not in the new ideas, but in escaping from the old ones, which ramify...into every corner of our mind." - John Maynard Keynes Try connecting all nine of these dots with just four ...

Figuring out whether certain levels in the Super Mario Bros series of video games can be completed before you play them is mathematically impossible, even if you had several years and the world’s most ...