Caesarian births directly affecting human evolution

[Catholic_Lady]

Caesarean births are leading to the genes preventing vaginal birth not being eradicated. This means that a higher and higher percentage of births need to be by C section.

http://www.bbc.co.uk/news/blogs-the-papers-38214665

Very interesting. Thanks for posting.

[Fake Messiah]

Finally we'll have really big brains because the limit on human intelligence up to now has been set by the size of the brain that will pass through the birth canal. But now that we have a cesarean people could pump their babies brain size be genetics and get something like this:


Although don't get too excited because body's chemical messengers responsible for our mental activity are relatively slow-moving. This means that further increases in the complexity of the brain will be at the expense of speed. We can be quick-witted or very intelligent, but not both.

But there are also electronic circuits where signals are electrical, not chemical, and travel at the speed of light, which is much higher.

[Minimalist]

Human evolution in the Darwinian sense has been screwed since Homo Erectus began caring for injured members of the group.  We have skeletal remains showing healed leg fractures going back over a million years bp.  In order for that person to survive long enough to have the bone heal other members of the group/clan had to take care of him.  Other animals simply do not do that.  If a lion is injured in a hunt it either lives or dies on its own.

Except that breaking a bone isn't directly related to a heritable trait.  Presumably, those that have c-sections primarily are the ones for whom it is warranted.  This is precisely the trait that would have culled these women from the gene pool were it not for cesarian sections.

It's not the bone that matters its the evidence of communal living and caring for injured members of the group.  We're not going to find evidence of someone who tears a knee ligament and can't walk because the soft tissue will not survive.

Besides, clumsy hunters who get killed off would probably have cleaned the gene pool.  Assholes who keep them alive are probably what gave us this moron.

http://www.dailyprogress.com/authorities...7e2f6.html

Authorities: Hunter dies after accidentally shooting himself

Vegetarian.  Old Indian word for shitty hunter.

[vorlon13]

Finally we'll have really big brains because the limit on human intelligence up to now has been set by the size of the brain that will pass through the birth canal. But now that we have a cesarean people could pump their babies brain size be genetics and get something like this:


Although don't get too excited because body's chemical messengers responsible for our mental activity are relatively slow-moving. This means that further increases in the complexity of the brain will be at the expense of speed. We can be quick-witted or very intelligent, but not both.

But there are also electronic circuits where signals are electrical, not chemical, and travel at the speed of light, which is much higher.

Fucking Talosians !

Kirk shudda nuked 'em.

[vorlon13]

[Mister Agenda]

We've been selected to form groups that care for each other. Now it's almost impossible for us to survive alone. C'est la evolucion!

[chimp3]

Science and technology is also affecting evolution by allowing those of us that eat processed food and wear clothing to survive. Let alone we that use heating and air conditioning.

[KUSA]

I'm assuming guys into that sort of thing would prefer a single use aperture instead of a design compromised for multiple purposes.

You should try it sometime.

[vorlon13]

I was wondering if anyone here had waded thru the verbiage and figured out what it said . . .

[vorlon13]

I'm assuming guys into that sort of thing would prefer a single use aperture instead of a design compromised for multiple purposes.

You should try it sometime.