>Why have a knowledge base when anything is easily googleable?

Because it isn't. It's not even close to "anything". Only superficial things are googlable, and even then google's NN algorithms sometimes manage to mess thing up, providing some useless links instead of a single correct one. That's why I tend to use google for quick search, but then I back it up with my own notes and articles/books/webpage archive. Of course, most of the times I will never use the things I store, but once in a while it saves me days. Knowing that I don't save regular stuff every kid can find in a minute even if the original resource is gone.