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From: Frank Krygowski <frkrygow@sbcglobal.net>
Newsgroups: rec.bicycles.tech
Subject: Re: Disc Compatibility?
Date: Fri, 7 Mar 2025 22:00:21 -0500
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On 3/7/2025 8:35 PM, Jeff Liebermann wrote:
> 
> Primitive man was a pyromaniac.  Whenever the necessary combustibles
> and appropriate weather were available, primitive man would start and
> tend a fire.  Most sources claim that the fire was mostly to keep man
> warm during various ice ages.  However, I believe the man was
> hypnotized by the flickering flame.
> 
> At some point in the distance past, man set fire to his dinner and
> thus invented cooking.  

I read an interesting article claiming that fire may have been critical 
to evolution of humans. The claim was that cooking makes food much 
easier to digest, and thus extract nutritional calories.

Since our large brains consume an outsized portion of our calories, that 
cooking over fire was necessary to the evolution of large brains. 
Without cooking, the theory goes, large brained proto-humans would have 
starved.

https://pmc.ncbi.nlm.nih.gov/articles/PMC124895/

"In the average adult human, the brain represents about 2% of the body 
weight. Remarkably, despite its relatively small size, the brain 
accounts for about 20% of the oxygen and, hence, calories consumed by 
the body."

-- 
- Frank Krygowski