What Is a Good Explanation?

What makes an explanation good is that it meets all the criticisms we have at the moment. You only have the best explanation when you've found reasons to reject the rivals. If I want to explain something like how come the stars don't fall down, I can easily generate 60 explanations an hour. But coming up with an explanation that contains knowledge requires both creativity and experiment,. It's also hard to change once we've got it.