Sleep as well. There is no way you are going to remember what happened last week much less two nights ago without a journal of some kind. Pencil and paper are g

Sleep as well. There is no way you are going to remember what happened last week much less two nights ago without a journal of some kind. Pencil and paper are great. But data accessible anywhere from any device is a use case that I can see being a necessity. Voice input may be a desired feature as well. For hands-free operation ;)