How to select a computer.

John Hodgman as PC and Justin Long as Mac

The primary decision criteria for selecting a personal computer are:

1. PC, Mac or Linux
2. Ergonomics
3. Desktop, laptop, netbook or tablet
4. Where to buy

Facebook easier-to-use Activity Log.

According to Samuel W. Lessin - Facebook Newsroom.

Today’s updates include Privacy Shortcuts, an easier-to-use Activity Log, and a new Request and Removal tool for managing multiple photos you’re tagged in.

Bicycle and motorcycle dynamics

A computer-generated, simplified model of bike and rider demonstrating an uncontrolled right turn.

Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics is a branch of classical mechanics, which in turn is a branch of physics. Bike motions of interest include balancing,