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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Jorj X Mckie who wrote (728137)	7/21/2013 5:27:46 PM
From: FJB	2 Recommendations Recommended By Bonefish joseffy Read Replies (1) \| Respond to of 1578937

If you go trekking in mountains like the Himalaya, which used to be at the bottom of the ocean, there are literally fossils all over the place. More than you would want to carry and valueless, because of their abundance. Most look like this:

To: Jorj X Mckie who wrote (728137)	7/21/2013 5:56:36 PM
From: combjelly	Read Replies (1) \| Respond to of 1578937

You are thinking of punctuated equilibrium. And the mechanism is not quite as you described. Evolution is always happening. Significant changes occur when there are challenges, usually environmental. As long as things are stable where the bulk of the organisms are, they can out-compete those who have adapted to different environments. When the environment changes to something closer to what one of the fringe groups has adapted to, then there is a (relatively) quick change in population.