What does it mean for an algorithm to be “fair”? Amsterdam’s struggles with its welfare fraud algorithm show us the stakes of deploying AI in situations that directly affect human lives.

What does proof-of-work algorithm actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The virtual robots weren’t given any instructions—they had to puzzle out how best to move forward for themselves, which is how the algorithm learns what does and doesn’t work.