The problem is that even answering that question just leads to another question. It ends up the way conversations go with inquisitive children - an endless stre

The problem is that even answering that question just leads to another question. It ends up the way conversations go with inquisitive children - an endless stream of "why"s with no real end because we don't know everything. At some point you just have to reach a satisfactory answer and realize that the more you learn the more you come to understand how little you know.