> You may not understand their level, and may be unable to negotiate it due to vocabular barrier (people invent non-standard vocab all the time). Your oversimplifications may bear unintended consequences, etc. You must take that into account and create a plan to make it clear.
This isn't actually bad in all cases though. It's like learning about science in primary school. You're gonna get some things simplified in a way that might be considered incorrect by those who are experts, but without some base layer of understanding to bootstrap from, you won't be able to become an expert.
You may not understand their level, and may be unable to negotiate it due to vocabular barrier (people invent non-standard vocab all the time). Your oversimplifications may bear unintended consequences, etc. You must take that into account and create a plan to make it clear.
And when you have that skill without any expertise, they call you politician. Only a politician may answer “easy” on a hard question and tell something unrelated for few paragraphs cause he doesn’t know anything on the original one.