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Tau vs PI

First, read this:

http://news.yahoo.com/mathematicians...154001699.html

My opinion on this is that it's a simple guage transformation that is useful in spherical trig or calculating compound angles but that's it.

Math is a tool. An elaborate extension to describe whatever we choose to measure.

PI is a reasonably accurate description of the ratio of diameter to circumference.

Tau is a reasonable accurate description of the ratio of radius to circumference.

Is there so much of a difference?

CT Co-ordinator, Paintball Marshals