Again with helmet-less celebrities? What the *$%# is up with these people?!? We'll make our kids wear helmets, but we won't. Stupid.
I have to disagree with you, Rapid Robert. Consider that Tori's head is about 4-5 feet off the ground. If she went down, for whatever reason, her family would have wished she had been wearing a helmet.
A runner's head is 5-6' off the ground. Where's the peer pressure to make THEM wear helmets? Consider statistics. Forget the fourth grade gravity demo with the watermellon. Real life is a bit more complex than that.