I've been thinking about the physics of opening a door. Suppose you are faced with two doors. Somebody passed by from the other direction, and the door that he used is half-opened and closing. Being my size, the opening is too small for me to fit in. So the question is, which door should I open: the one that's closing, or the one that is already closed? My answer (and I could be wrong) is that I should actually open the one that is closed. The reason is inertia: to re-open the door that is closing, you need to reverse its inertia to close and then push (or pull) it in the opposite direction. For the door that is already closed, all you need to do is defeat its inertia to stay there and push (or pull) it open. So that should take less initial force to open the door. Does that make sense?

The current battery life of my computer: 3 minutes.

The Wallis and Gromit movie is coming out tomorrow. I looked forward to this for a while now, but too bad it's a Halloween movie, which makes me hesitate a bit on whether I will go watch it or not...