Humans do Google autocomplete for each other. Rather than understand what you want to say, people grasp whatever (they think) is likely to follow your train of thought.
This is a problem when communicating new ideas. Pre-existing concepts and associations guide thought in certain directions, similar to an ice skate slipping down a deep groove.
Robin Williams illustrates this during a bit where he pretends to invent golf:
Inventor Scotsman: Here's my idea for a sport. I knock a ball into a gopher hole.
Listener Scotsman: Oh, you mean like pool!
Inventor Scotsman: No, forget pool. Not with a straight stick — a little broken stick. I whack a ball into a gopher hole.
Listener Scotsman: Oh, you mean like croquet?
Inventor Scotsman: Ah, no, not croquet. I put the hole hundreds of yards away.
Listener Scotsman: Oh, kind of like a bowling alley.
Inventor Scotsman: Oh no way! I put stuff in the way like trees and bushes.