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What is a must and what is not?

Posted on Feb 26th, 2009 by :franc : Rubyist :franc
This is in Response to the Questions and Reflections for February 26, 2009:

Try not. Do or do not. There is no try.

Yoda
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http://www.gaia.com/quotes/43736/try_not_do_or_do_not_there_i/by_yoda
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Tagged with: QaR, must, essentials, necessary, flexible

our ancestors walked like us already by 1.5 mil years ago

Posted on Feb 27th, 2009 by :franc : Rubyist :franc
15-million-footprints-uncover_1
Modern humans, homo sapiens, have been around for a few hundred thousand years. We have good remains and artifacts dating back 200 000 years.

We also have some very good remains of Homo Erectus/Ergaster from around 1.5 million years ago who were sufficiently different to be called a different species, but who passed their genes down to us.

With those genes we also inheritted our modern gait. yep, that's right, analysis of fossilized footprints found in kenya along an ancient riverbed shows that ergaster, although his legs were slightly shorter and arms longer, had a similar gait and foot structure to ours.


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Tagged with: ergaster, fossils, evolution, homo sapiens