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Author Topic:   Is body hair a functionless vestige?
NoNukes
Inactive Member


Message 82 of 143 (611482)
04-08-2011 7:44 AM
Reply to: Message 80 by Robert Byers
04-08-2011 3:40 AM


Robert Byers writes:
So our having hair is a wrong over sensitive reaction of the inate powerful abilities of bodies to adapt to the local areas we migrated to.
Why do whales have hair? Surely it is not to keep them warm or dry.
Its then that under the arms etc where the most sweating takes places that hair grows in a useless attempt to keep the area dry.
Given your explanation, it is difficult to imagine why humans have hair at all. According to you human hair does not work to keep us warm or dry, is apparently completely useless and presumably always has been.
Why do men grow hair on their faces some time after puberty? In fact, hair seems to grow faster on the head and face than under the arms. Why is that?
Edited by NoNukes, : No reason given.

This message is a reply to:
 Message 80 by Robert Byers, posted 04-08-2011 3:40 AM Robert Byers has replied

Replies to this message:
 Message 83 by Robert Byers, posted 04-08-2011 9:10 PM NoNukes has replied

  
NoNukes
Inactive Member


Message 90 of 143 (611607)
04-09-2011 8:10 AM
Reply to: Message 83 by Robert Byers
04-08-2011 9:10 PM


Robert Byers writes:
As i said the body is over sensitive or powerful and so over reacts to triggers.
Why do whales have hair? Why do men grow facial hair? Your explanations don't deal with either. Are you ducking the hard questions?
hair is useless under the arms etc but is useful on the head.
In fact i would say its logical that women have greater hair on the head relative to their body size because they need to keep the head dryer because of lesser body heat.
Do women have more hair on their head than men for any reason other than not getting hair cuts? My own hair was quite long in the 70s. Do we really have more hair on our underarms than elsewhere? I don't.
Wet hair threatens them more then big guys. Now perhaps again its useless but it might be usefull.
The correct way to express your state of knowledge about why humans have hair would be "I don't know". If wet hair is dangerous, then why grow hair?
Is there any field of human endeavor that you know enough about so that you don't have to just make stuff up?
Therefore our bodies simply grow trivial hair because of a past of being a little more wet. Special areas on our body just make this equation more obvious
Really. So at some point in the past, men got their chins and upper lips wet but not their foreheads? Women exhibited a different pattern of getting wet? When did this evolution take place?
Edited by NoNukes, : bad apostrophe removed

This message is a reply to:
 Message 83 by Robert Byers, posted 04-08-2011 9:10 PM Robert Byers has replied

Replies to this message:
 Message 93 by Robert Byers, posted 04-12-2011 1:04 AM NoNukes has replied

  
NoNukes
Inactive Member


Message 96 of 143 (611905)
04-12-2011 3:00 AM
Reply to: Message 93 by Robert Byers
04-12-2011 1:04 AM


Whales hair would simply be a remnant from a earlier land life.
Interesting. Apparently, you do believe in evolution of a sort.
Byers writes:
Its logical from my stance to see the smaller sex, so less heat producing, as needing more protection from getting wet on the head.
You have not even established that women have more hair on their heads than men.

This message is a reply to:
 Message 93 by Robert Byers, posted 04-12-2011 1:04 AM Robert Byers has replied

Replies to this message:
 Message 101 by Robert Byers, posted 04-15-2011 12:56 AM NoNukes has replied

  
NoNukes
Inactive Member


Message 108 of 143 (612429)
04-15-2011 2:43 PM
Reply to: Message 101 by Robert Byers
04-15-2011 12:56 AM


Robert Byers writes:
NoNukes writes:
You have not even established that women have more hair on their heads than men.
I've always understood they have more hair or hair holes relative to the size of their heads compared to men. Then also a stronger quality.
You are just making that stuff up. And your explanation is completely backwards.
A smaller body with a smaller surface area would mean
1) Less energy need be generated internally required to attain a given temperature.
2) Less heat loss due to radiation or convection.
That means that big people, male or female, need greater protection against heat loss in a cold, wet climate than do smaller people.
Yes i insist marine mammals were just post flood creatures that took to the water. nOt by evolution by mutation/selection but innate triggers to quickly adapt .
Apparently those innate triggers produced inheritable changes. Someday it might be worthwhile to discuss the mechanism by that you understand will allow such things to happen.

This message is a reply to:
 Message 101 by Robert Byers, posted 04-15-2011 12:56 AM Robert Byers has replied

Replies to this message:
 Message 109 by ringo, posted 04-15-2011 3:09 PM NoNukes has replied
 Message 127 by Robert Byers, posted 04-20-2011 2:57 AM NoNukes has seen this message but not replied

  
NoNukes
Inactive Member


Message 110 of 143 (612465)
04-15-2011 9:56 PM
Reply to: Message 109 by ringo
04-15-2011 3:09 PM


ringo writes:
Because of the square-cube law, bigger people have a higher mass-to-surface-area ratio, which should translate to higher heat-producing capacity and lower heat-loss capacity, shouldn't it?
A larger body would definitely lose more BTU/hr than a smaller one, but I hadn't considered an increase in heat generating capacity proportional to the mass. So for big, compact animals, a smaller fraction of the generated heat would be lost. A larger body would be better at maintaining temperature in the cold, but less able to get rid of heat in a too hot environment. I think you and Byers are right about that.
ringo writes:
I don't see it having much to do with hair though.
More hair might help in cold climates, but women don't actually seem to have more hair on their heads. Not sure why Byers is trying to explain something that does not seem to occur.

This message is a reply to:
 Message 109 by ringo, posted 04-15-2011 3:09 PM ringo has seen this message but not replied

Replies to this message:
 Message 111 by Jon, posted 04-15-2011 10:52 PM NoNukes has seen this message but not replied

  
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