

When he stopped and restarted his simulation, he ended up with wildly different results, which shouldn't be a thing. That is, they did until the mid-20th century when mathematician Edward Lorenz was studying a simple model of the Earth's weather on an early computer.

This idea was largely put to rest, and physicists continued, assuming that the universe was deterministic. One of the most important reasons he highlighted was how small differences at the beginning of the system would lead to big differences at the end. Instead of solving it, he wrote about the problem, describing all the reasons why it couldn't be solved.

French mathematician Henri Poincaré (arguably a supergenius) won the prize without actually solving the problem.
