Soleron said:
No. Doesn't work like that at all. Will take 500+ years (tens of generations) for natural selection to have this effect, if it even does. Prevalance of asthma/sight problems isn't actually higher, but reporting of it is. People just dealt with it. I've read a plausible theory that increased allergies are due to lack of exposure at or around birth, i.e. our society is cleaner now. |
Not quite, natural selection and evolution are far more prevalent and noticeable during times of great environmental change, sometimes really quickly (up to one million times faster than absolute mutation rate).
Besides the great population boom in our planet happened exactly because our medical knowledge increased, allowing people who would otherwise be dead to live through infancy. It's highly unlikely that they all died before due to environmental factors and not genetical ones.
Right know it's very unlikely we aren't genetically deteriorating, so to speak. No amount of politically correct thinking will change that, neither will thinking all it's fine and dandy due to the mystic wonders of technology...