Here’s a (very old) joke I like to tell on tech forums sometimes; it nicely encapsulates how they communicate. Most people get it, but there’s always a few who don’t think it’s funny:

A programer’s wife asks him to do some shopping: “Please buy a loaf of bread, and if they have eggs, buy a dozen.”
He comes back with 12 loaves of bread.
The wife asks: “Why on earth would you get 12 loaves of bread?”
“They had eggs.”

All of the worst programmers I have worked with do that exact thing and refuse to acknowledge that they might have misunderstood what was said.

The good ones ask for clarification when something sounds weird.