wj, amazingly, there is recent evidence that pi has changed over the last 15 years. I got this email news from American Scientist last week:
>ROUND BUT NO APPLES
>Los Angeles, CA
>
>The obsession of some mathematicians for calculating the value
>of 'pi' to the nth decimal place has been a mystery for many.
>Pi, the ratio of the circumference of a circle to it's diameter is
>approximately 3.14. The current record is in the millions of decimal
>places. At the 27th Congress on Number Theory held at UCLA last week
>Dr. Michael Leermann of Princeton University revealed a fascinating
>new twist in the search for pi.
>
>Although current determinations of pi are more accurate than
>previous computer estimates, Leermann notes that there is a
>statistically significant trend for higher values of pi as
>determined over the last 15 years. "This cannot be written-off as a
>statistical fluke" claimed Leermann in a radio interview. "The
>result is far too significant to be due to random variation and our
>group has ruled out all possible systematic sources of error".
>
>The discrepancy shows up in the non-random centering of the values
>obtained around the average value. Prof. Mark Wellford at the
>University of East Anglia, Norwich, UK, agrees that there is no
>other possible explanation. "Pi has drifted over the last 15 years
>and we cannot explain it. As much as we hate to admit it, the
>universe has flexed and with it the mathematical laws we know and
>love".
>
>American Scientist
>3rd August 2002
[This message has been edited by Tranquility Base, 08-13-2002]