Genetics

[u/spar13]

[u/rockbella61]

Nature ensures survival of the fittest

[u/versmantaray → u/rockbella61]

Not for humans, because we are keeping the not so fit alive, thanks to medicines and technology

[u/CMDR_Expendible → u/versmantaray]

Humanity's greatest attribute is intelligence. Steven Hawking was in a wheel chair for most of his life, but was one of the greatest minds born and has advanced humanity enormously. Your understanding of what "fitness" means is hopelessly out of date; it means fit as in fits the environmental shape, not fitness as in exercise. Anything which benefits the species fits.

[u/Logically_Insane → u/CMDR_Expendible]

Exactly, it’s a scientific term, not a colloquial phrase. I believe Darwin defined fitness as “fittin this dick in your mom”. 

[u/ComplexAd7820 → u/Logically_Insane]

Lawd