One of the most useful concepts ever:

the Curse of Knowledge.

Explaining something to someone? Zoom out. Back up. What if that person were an alien, how much more context would you need to explain?

The curse of knowledge is a cognitive bias that occurs when an individual, who is communicating with others, assumes that others have information that is only available to themselves, assuming they all share a background and understanding. This bias is also called by some authors the curse of expertise.