Thing thing about committing stuff to memory is that it results in a fragmented install base across the 'user base' that may not get updated regularly. Even just double-checking Google before you act on existing knowledge may prove that new insights have caught up with what you held to be true, and you need to update your knowledge. I'm fairly certain that this "knowledge in the cloud" aspect of Google actually makes us faster and more coherent as a whole. It's just going to be somewhat of an issue when there is no internet around.