One time on mountainbike ride down in Moab we stopped at the edge of a cliff and threw some rocks off and they came zinging right back up at us!!! It was either angry Anasazi spirits or the wind.
My story is true.
Yours is patently false and designed to incite apathy.
It was very very true! And...I was wearing a helmet, albeit designed for biking. It is the smart thing when there is the potential for banging your head into the rock. But not needed if you never crash.