The fact that many things have no explanation ought to prevent them from happening; but it doesn't.
Isn't it a coincidence that you and I are both alive at the same time?
Nothing really matters except a few things that really don't matter very much.
The more sure you are, the more wrong you can be.
If coffee didn't exist, somebody would have to invent it for me very soon.
Nothing we do can change the past, but everything we do changes the future.