[golergka]

> Controlling the boat near the dock is probably more difficult than cars or air planes since swells/waves/winds can move the boat relative to the dock.

For a layman, it sounds as the same kind of difficulty as controlling a drone in the air. It's not perception and identification of millions of different objects, neither it is predicting other driver's behaviour on the road — it's a physical process. Computers seem to be quite effective at adapting to that.