Natural selection in action?

"Around 2 pm yesterday in Wenzhou, Zhejiang province, a brother and sister duo rode a motorcycle off the roof of a building, both of them dying in the fall.

Preliminary reports have ruled it an accident. The siblings were practicing how to ride when the driver is said to have lost control."
Link: http://beijingcream.com/2013/05/sibl...-their-deaths/