I think it is absolutely troublesome when one doesn't have one's laptop with him/her.. especially when most of the information are contained in the laptop.. it's as if a proper part of the person's life is gone (the planning part) and what's left is the need to tackle only what the person has on hand at that moment (which can really amount to some boring things such as reading about the history of psychology - some parts are alright, some are unpredictable, but i guess that's straying away from the point which i'm trying to make).