Selection bias. My mom was a head trauma nurse and told me never to snowboard, skate, drive a motorcycle, rockclimb etc. She now sits on her safe couch all day,

Selection bias. My mom was a head trauma nurse and told me never to snowboard, skate, drive a motorcycle, rockclimb etc. She now sits on her safe couch all day, retired, watching the news and growing more bitter daily instead of living her life.