What if everything you know about predicting the future is wrong? Philosopher Nelson Goodman created a paradox that challenges the very foundation of logic and science.

If every emerald you've ever seen is green… why not believe they’ll all turn blue tomorrow? This short will twist your brain and make you question whether induction — the way we predict anything — is even valid. Welcome to the riddle of “grue.”

The rules of reality might not be as stable as you think.