One must always keep in mind that half of the population has below average intelligence. If you interact with enough people, you're going to find that many are dumber than yourself. When you make a story, you need to pick the level of required literacy and comprehension that you want, and then just ignore those too stupid to understand. If you try to make it approachable and understandable to all, you end up with something so simple and basic that even most kids would find it boring.