It's very hard! I tried to simplify as much as possible and use as many small lies as possible, but keep the explanation faithful to the central idea.

For example, I used that if k is a complex number with modulus 1, and k* is the conjugate, then kk*=1. It's a subject from a course of the first years of the university of a technical degree and perhaps a high school. Adding a detailed explanation in the middle makes the explanation too long. Also, it's a very important part of the correct technical complete version of the explanation, it's not a side comment or a metaphor.

I think it could be explained better, or with different tradeoff to make it easier to understand. Anyway, it's my best effort with my personal taste.

If you tell me the part that confused you, I can try to explain that part more. (And if you provide some personal background, like age range and what you studied, I can try to tailor it more.)

I'd be satisfied with ELHighschool