Early in my career, a housemate told me about his adventures teaching a robot arm to build a tower of blocks using an AI framework for developing systems that exhibit intelligent behavior. Define a block. Define a tower of blocks. Find the block. Pick the block up. Place the block. Place another block, and so on to make a tower. Oh wait, the arm doesn't know about gravity so it tries to start at the top and work downward. Teach the arm about gravity. Oh, that is a glass table top, so learn to start there instead of crashing through to start on the ground. And so on.