I bought my brother a book as a gift. A book I love called "powers of 10" which is a series of pictures each taken from an order of magnitude greater distance. It starts with atoms and goes all the way up to the milky way. It's such a good way to understand the relative size of things in our universe.

I bought it used on Amazon. It was an old library book that still had the sleeve and index cards with the date stamps of when it was last checked out.

This particular book, that I bought sight unseen from Amazon, used, for my brother's birthday had only been checked out once in its life at the library. It was last checked out on my brother's exact birthday. The book I randomly bought him had a stamp of his exact birthday, only.

Talk about going from thinking we're so small in the universe to that kind of coincidence.

Edited to fix a misspelling