In Search of the Longest Subway Ride

This is a pretty cool project by WNYC: They are trying to figure out what the longest ride on the NYC subway is that you can get with a single swipe. You can transfer as often as you want and visit stations repeatedly, but every line segment may only be visited once. They have built a small website that is trying to crack that problem brute force in the browser:

A bit like a traveling salesman who really doesn’t want to go home.

via kottke.org

Why we encrypt →

This protection is important for everyone. It’s easy to see how encryption protects journalists, human rights defenders, and political activists in authoritarian countries. But encryption protects the rest of us as well. It protects our data from criminals. It protects it from competitors, neighbors, and family members. It protects it from malicious attackers, and it protects it from accidents.

Security guru Bruce Schneier explains why encryption is important. Worth a read.