/sci/ - Science & Math

[Anonymous No.10328923]

Why did primate faces and bodies become (mostly) hairless? Why do humans have hair different from other mammals?

[None !obkpuSWh5M No.10329266]

Two pros, two cons.
Pro: sweating helps us cool down.
Pro: more streamlined for swimming.
Con: colder in the winter.
Con: more likely to get cuts and scratches from twigs and stuff.
Clearly, the pros outweighed the cons.

[Anonymous No.10329307]

>>10328923
bodies yes, but faces ... sometimes not

[Anonymous No.10329729]

>>10328923
That picture is so lazy, they just keep reusing picture but longer of wider or larger and so on

[Anonymous No.10329738]

>>10328923
Pretty sure ticks & fleas etc. helped it along, and then sexual selection did the rest.

[Anonymous No.10329786]

>>10328923
They forgot to add the niggers in the picture.

[Anonymous No.10329807]

>>10328923
Because it looks nice.

[Anonymous No.10329828]

Evolution is not science. Evolution is just a belief system just like any other religion.
Evolution was made up so people could ignore moral responsibilities and reject the possible consequences of one's own actions.

[Anonymous No.10329883]

>>10329828
A triggered postmodernist.

[Anonymous No.10329909]

>>10329883
Yes postmodernists tend to believe in evolution sadly. Hence their lack of moral code

[Anonymous No.10329922]

Facial expressions are easier to see

[Anonymous No.10329946]

>>10329909
>Yes postmodernists tend to believe in evolution

Postmodernists don't believe in Science.

[Anonymous No.10329998]

>>10329946
Exactly. They don't believe in science. So they don't believe in evolution. Evolution is not science, it's a religion.

[Anonymous No.10330148]

As far as we can tell, it's an adaptation for diurnal exhaustion hunting. Hairlessness coupled with supercharged sweat glands means we shed heat very effectively, allowing us to remain active even during the hottest part of the day in warm climates.
most large prey can outrun us in the short term, but they overheat and tire very quickly in comparison. simply by following, say, an antelope (even just quickly walking after it) and preventing it from resting, a fit human on a hot day can run it to exhaustion to the point where it will just collapse.

[Anonymous No.10330186]

>>10329998
>They don't believe in science
>So they don't believe in evolution
> Evolution is not science
Did you drop your logic 101 class ?

[Anonymous No.10330216]

>>10328923
>elephants
>hippos
It's not a big deal.

[Anonymous No.10330373]

>>10330186
>Logic
>Evolution
Oh dear. Another government education npc product.

[Anonymous No.10330573]

>>10328923
Clothing.

[Anonymous No.10330586]

>>10329786
Different species...

[Anonymous No.10331040]

>>10330373

[Anonymous No.10331075]

>>10328923
Think about how bad we smell without regular, and thorough scrubbing down, with chemicals designed to sanitize and deodorize. Compared to any other animal (even skunks, unless they spray) we reek to high fucking heaven. It has to be an evolved defense mechanism.