Why Does All Reality Need an Explanation?

Anyone the first ten people that sign up on patrion are going to get a free copy of how reason can lead to god. And by the way, russell jones, he's one of our patrons. So if you want to a free book and be entered to win all 12 books, then go ahead and do that. Al right, let' move on to the next question. This ones from aden peterson. Why think that all reality needs an explanation? It seems to be a different thing than the universe, if it is a thing at all.