by Max Barry

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«12. . .936937938939940941942. . .2,5572,558»

Solorni wrote:Let's not feed the troll :3

No, I was trolling the troll, plus I don't think they were a troll. Just a hater.

nvm

Truly Awsome wrote:No, I was trolling the troll, plus I don't think they were a troll. Just a hater.

And a flamebaiter.

Truly Awsome wrote:No, I was trolling the troll, plus I don't think they were a troll. Just a hater.

Just ignore any harsh or brash people and you should be fine.

Hello

The first colony of kajan

Wow ...

Most people have to or should wear glasses.

I feel special now :3

I'm surprised so few have hyperopia, but it could be that people who might need glasses for that don't wear them much.

At one time in prehistory, all those with sight impairments would have been weeded out of the gene pool through natural selection, but through the intervention of man and medicine, here we are.

If so, why do we still have it?

Solorni wrote:If so, why do we still have it?

good question! I have no idea...

Solorni wrote:If so, why do we still have it?

I think dhe meant that because of medicine, people with sight impairments survive long enough to procreate, passing the gene along.

Truly Awsome wrote:I think dhe meant that because of medicine, people with sight impairments survive long enough to procreate, passing the gene along.

*she

Truly Awsome wrote:I think dhe meant that because of medicine, people with sight impairments survive long enough to procreate, passing the gene along.

Yeah, but what about before medicine? If it would have be weeded out by natural selection I feel it would have happened in the long period before written history.

I only have contacts because my eye doctor said i was watching too much tv, but I'm pretty sure he's been lying to me

The wings of morelia

Truly Awsome wrote:I think dhe meant that because of medicine, people with sight impairments survive long enough to procreate, passing the gene along.

It doesn't make a lot if sense to me, though.
I mean sight impairments from long ago doesn't really have that much of an impact on hunting and gathering, because at the end of the day you're still bringing in meat for the tribe, and get to mate and sht.

Not like the tribe's gonna prohibit Hunter-Jimmy from mating because he has myopia.
Then again, I could be pulling things out my ass, so take mine with a grain of salt.

Plus when humans went to agriculture, it wouldn't matter nearly as much. I mean, in my mind myopia is actually more of a hindrance when it comes to literacy and the modern world rather then prior. Morelia brings up a great point :)

Glasses make people look weak. They are like wheelchairs for the eyes.

The retroville

3,999 nations...

Eyesight isn't just about Genetics, the environment can have a large impact, for example;

"For example, 30 years ago, around 25% of the teenagers in Singapore were nearsighted. That number is now around 80%. The difference isn't a change in the gene pool; it is more what the kids are doing these days."
-found on the interwebs somewhere

I would think that in prehistory, if Jimmy the Hunter didn't have good vision, instead of bringing home the meat, some carnivore would be bringing Jimmy back to its den.

prehistoric people hunted in groups. someone who was long sighted would be good as a lookout, and be able to spot prey/predators from further away, while someone who was short sighted may be better at tracking prey, noticing footprints and trails, and be better at noticing if food is in good condition or not.
If anything, having a variety of eyesight would benefit early man.

The wee little dino

Hello

The first colony of kajan

In Prehistoric times:
Jimmy: "Look guys I found some meat!"
*meat is bits of bark and his friend*
Jimmy: "Let's eat!"
The Tribe: "Go away Jimmy."

Lady Marian and Bob hawke

New fakeland wrote:Eyesight isn't just about Genetics, the environment can have a large impact, for example;
"For example, 30 years ago, around 25% of the teenagers in Singapore were nearsighted. That number is now around 80%. The difference isn't a change in the gene pool; it is more what the kids are doing these days."
-found on the interwebs somewhere

I would be worried about whether or not this is true.

You're all forgetting the easiest reason why some genetic issues could be passed along despite a lack of medical intervention -- recessive genes. I mean when you're dealing with evolution and "survival of the fittest", there's a whole boatload of complicated factors that go into why a particular gene or trait survives despite seeming like a detriment, including the fact that it may just not have been detrimental enough, but then there's those super sneaky recessive genes that just sneak their way through and keep cropping up.

«12. . .936937938939940941942. . .2,5572,558»

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