One more way that "common sense" can be wrong

From The Copenhagen Bike Culture Blog on why promoting helmet use aggressively and portraying cycling primarily as a sport may be counterproductive:

"Helmets and things like that do give this impression that cycling is inherently dangerous, and this whole urban warrior image is not very helpful," he said. "But of course, a lot of the aggression is also about having to compete for space and priority with cars."

From an article in the Guardian.