"The answer is 77 years."
Either mechanical or physical. I would say physical though.
Hi !
The distinction between an accident and a risky behavior
An accident may be caused by something , someone else than you. You're not responsible for what happened. A car may have hurt you, you may have fallen and break your legs.....and you may be hurt by someone who has risky behaviours.
People having risky behaviours are aware of what they're doing. If something happen to them they are fully responsible.
Hope I helped !