> What seems simple enough may actually be the last piece to be figured out. In the early days of AI, before the winter, people thought that getting computers

> What seems simple enough may actually be the last piece to be figured out. In the early days of AI, before the winter, people thought that getting computers to play chess would be hard but walking or recognizing faces would be easy. Turns out that difficulty is often not where we expect, except for a general tendency for more complex more macro-level things to be harder. Even then there are exceptions, but nutrition has not shown any signs of being one.