An AI expert explains why it's hard to give computers something you take for granted: Common sense

Imagine you're having friends over for lunch and plan to order a pepperoni pizza. You recall Amy mentioning that Susie had stopped eating meat. You try calling Susie, but when she doesn't pick up, you decide to play it safe and just order a margherita pizza instead. People take for granted the ability to deal with situations like these on a regular basis. In reality, in accomplishing these feats, humans are relying on not one but a powerful set of universal abilities known as common sense.