Earlier quoted context omitted.
I don't agree. The human body tells you when things are right or wrong. It is about the effects, not whether it is a new stimulus that caused those effects.
> The human body tells you when things are right or wrong. The human body won't tell you to avoid lifelong tanning to avoid cancer in your 60s, because living to your 60s isn't all that evolutionarily important (and hell, likely made you a drain on your hunter-gatherer tribe). There's no selection pressure.
Apparently there are some arguments that having elders around was a boon for prehistoric tribes. http://www.theguardian.com/science/2011/jul/24/prehistoric-m...
I don't know how much this is validated, but thought it was interesting nonetheless because it seems counter intuitive at first.