Make that 3.

I once had a friend who told me what he had learned from a psychology class. Everyone is selfish, think about it, the one who donates a check to charity does it because it makes them feel good to do so, its nice that they do it but they would not do it if it did not make them feel good. Many more examples exist, but this is not that thread...

And just to keep on topic... May the selfish sidewalk riders and selfish road riders know that they have something in common...