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URL:  https://boards.fool.com/well-thats-sort-of-exactly-the-point-of-the-22201058.aspx

Subject:  Re: Religionists miss the scale of things Date:  3/13/2005  8:37 PM
Author:  biskit Number:  143677 of 518527

Well, that's sort of exactly the point of the article, that they believe there is periodicity to the extinctions. You can laugh at that if you like, but then we know there is periodicity to sun spots, to the change of the magnetic poles from North to South and back again, and other natural phenomena. We know that our solar system revolves in a wingtip of a greater galaxy and that there is periodicity to making that revolution, that even galaxies move through space, that there are comet showers which return on predictable timetables, and so on.

In his book "Unweaving the Rainbow" Richard Dawkins goes into this a little. He quoted the same time period, 62 million years, but also another shorter period of 26 million years for smaller scale extinctions.

One theory he offered is that our sun is part of a binary system with an orbit of 26 million years, with the unseen 2nd star causing orbital disturbances in swarms of comets and asteroids leading to increased metorite impacts with Earth.

This all is in a discussion of Fourier analysis. Very interesting reading for the mathematically interested. He even talks about the possibility of determining the length of and male elephant's penis based on the wave pattern of the bull's urine trail during musth (an elephant "walk-about").

Who says science & math are dull?

-biskit
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