Some of the most interesting things on Reddit are also the most unexpected. For instance, a post that's just supposed to make people laugh might leave users learning something new. Or maybe an interesting interview with a celebrity includes a moment that's fascinating, but has nothing to do with the original topic of discussion.
Those are some of the most valuable moments on Reddit. For example, this week users got a biology lesson in the comments of a funny bird photo. They also learned that the White House makes beer, which came up when Michelle Obama told NPR about gardening.
Ironically, the book that's famous for making you look really hard for something small, "Where's Waldo?" is also part of this week's interesting facts.