I wonder how much money UCLA got from various taxpayer backed entities to point out the obvious.
It was 'sponsored' by H-D
Well if they have to explain you wouldn't understand..
Heck some folks don't understand high C02 concentrations in the atmosphere is bad for human survival. But do understand more power is more fun.
Anywho: don't give a darn who paid for it, from personal experience I know riding my bikes makes me calmer and I do pay more attention when I ride. Even HD can get something right