well, there are many things that can be claimed as the key to society evolution, and you can always write an article pointing that out, but it was a nice reading, thank you,
love this one:
“Notice that whenever you see the bicycle portrayed as an alternative to the car, the bike-riders are always healthy people, unburdened with shopping carts or groceries or babies. They're never elderly or handicapped. And it's never a rainy day.”
and you can elaborate further noticing what happens nowadays in places like cities in the nederlands stuffed with bicicles that are piled in the pedestrian paths, and that are driven aggresively against pedestrians,...it is nice to see one or two bicycles, but when they become thousands they become your worst nightmare