Michael Reed, an astrophysicist, said: "The tenth digit has even been correctly rounded up. The little dot near the centre is the decimal point.
"The code is based on 10 angular segments with the radial jumps being the indicator of each segment.
"Starting at the centre and counting the number of one-tenth segments in each section contained by the change in radius clearly shows the values of the first 10 digits in the value of pi."
It doesn’t seem so “mind-boggling” to me. I should think that math geeks would be exactly the sort of people to join a crop circle maker group. Link -via Digg