Having such conversations with kids makes you struggle sometimes. You have to find the correct words for ideas and things you take for granted as you've never had to explain to anyone in the adult world. At the same time, it is very rewarding listening to the ideas coming from their fresh minds, they do not "keep" anything to themselves and just express their thoughts as they flourish, it is very enriching.
Perhaps talking to kids about complex ideas helps us better understand them ourselves, as we have to dumb them down, make them more relatable, less conceptual.