Is there any way that you can give a very clear explanation to something to someone who is having difficulty knowing and understanding what you are talking about?
Just do it - Nike.
There is usually a point of reference - a book, a website, whatever it may be. I would direct them to either of those.
The theory of evolution, like the theory of gravity, is a scientific fact. NDT
It takes much skill to get across information who is not accepting your word or processing them the way you meant them!
Depends if they want to understand.
Never open doors if you don't dare to walk on through ...