For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural
’ Message Board).
Perhaps you did not understand the question? Since pi naturally exist in every circle, simply finding pi can not serve as proof of pi being ancient knowledge. So I ask again: How did Professor Thom confirm pi was in the ancient builders field of knowledge.