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(National Geographic)   Why do humans walk on two legs? If you answered 'to walk on four legs breaks the law' you're only partially right   (phenomena.nationalgeographic.com) divider line 21
    More: Interesting, bipedalism, paleoanthropologist, lemurs, Evolutionary history, marsupials, kangaroos, trunk, Ardipithecus  
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2839 clicks; posted to Geek » on 03 Oct 2013 at 12:40 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



21 Comments   (+0 »)
   
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2013-10-03 12:12:44 PM  
We walk on two legs, not on four
To walk on four legs breaks the law
What happens when we break the law?
What happens when the rules aren't fair?
We all know where we go from there:
TO THE HOUSE OF PAIN!
 
2013-10-03 12:47:50 PM  
Glad I'm not the only one who can sing along. Does the headline reference something broader than that song? Because that's the only context I know the words in.
 
2013-10-03 12:47:55 PM  
Because we only have two legs.
 
2013-10-03 12:48:45 PM  
Shenanigans!

redcarpetrefs.com
 
2013-10-03 12:50:47 PM  
Nice Boingo reference...
 
2013-10-03 12:51:34 PM  
conservation of energy when traveling long distances?
At least that is what I remember from quite a few years ago.

Maybe I will go read the article and find out how bad my memory is.
 
2013-10-03 12:55:35 PM  
I heard one time it was so we can see farther on the horizon, and get a better warning on if a predator was coming our way.

But, that has been a while and I don't know the source, it's just something that has been stuck in my brain.
 
2013-10-03 01:00:46 PM  
Because walking on three is just showing off.
 
2013-10-03 02:00:49 PM  
But I thought 4 legs good, 2 legs bad?
 
2013-10-03 02:08:10 PM  
Uh, probably because we only have 2 legs.

Dumbasses.
 
2013-10-03 02:23:46 PM  
Four legs good, two legs better!
 
2013-10-03 02:43:54 PM  
to check out the wimmins'
 
2013-10-03 03:06:29 PM  

Bongo Blue: to check out the wimmins'


where the bipedal women at?
www.zuguide.com
 
2013-10-03 03:13:27 PM  
Well done subby.
 
2013-10-03 04:34:49 PM  

chilehead: Nice Boingo reference...


I knew there had to be enough Boingo fans around here to get that quote posted fast.
 
2013-10-03 05:11:31 PM  

taurusowner: But I thought 4 legs good, 2 legs bad?


4 legs good, 2 legs better. Didn't you read to the end?

/Poor Boxer
 
2013-10-03 05:19:37 PM  
Several reasons.
The ability to elevate bipedally helps increase visible range significantly
Walking/running is MUCH more efficient as weight is borne by long-bones of the legs rather than directly on energy-consuming muscles.  Also, vertical posture minimizes body surface-area exposed to the sun (it's above us) which keeps body temperature manageable.
 
2013-10-03 05:41:34 PM  

cefm: Several reasons.
The ability to elevate bipedally helps increase visible range significantly
Walking/running is MUCH more efficient as weight is borne by long-bones of the legs rather than directly on energy-consuming muscles.  Also, vertical posture minimizes body surface-area exposed to the sun (it's above us) which keeps body temperature manageable.


while those are great benefits, the biggest is the synergy of the visible range combined with the ability to utilize the opposable thumb in conjunction with a higher-level brain in a multi-tasking effort (spear/club, carrying food or other resource, etc).
 
2013-10-03 05:55:15 PM  

Leader O'Cola: cefm: Several reasons.
The ability to elevate bipedally helps increase visible range significantly
Walking/running is MUCH more efficient as weight is borne by long-bones of the legs rather than directly on energy-consuming muscles.  Also, vertical posture minimizes body surface-area exposed to the sun (it's above us) which keeps body temperature manageable.

while those are great benefits, the biggest is the synergy of the visible range combined with the ability to utilize the opposable thumb in conjunction with a higher-level brain in a multi-tasking effort (spear/club, carrying food or other resource, etc).


The real reason is that if we had four legs and two arms women would need disposable vaginas to give birth to that.
 
2013-10-03 06:56:49 PM  
I thought it was because it's much more efficient for persistence predation.
 
2013-10-03 11:34:58 PM  
Not to claw at the bark of trees, that is the law.
 
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