I think this is true

I remember explaining linear programming to a very good PhD statistician. He summarized the explanation in a single sentence because he had a very complex mathematical machinery at hand to utilize for that understanding.

I also remember explaining linear programming to a class of MBA students who had very little background in mathematics and certainly none in systems of linear equations. It took me days to figure out how to make an explanation that those students could understand. I learned a lot in the process.

I guess Einstein was pretty smart!