I actually tried to link to the comp.compression FAQ but was disappointed that it didn't directly address pi compression, despite its popularity. It does addres

I actually tried to link to the comp.compression FAQ but was disappointed that it didn't directly address pi compression, despite its popularity. It does address the pigeonhole principle though. http://www.faqs.org/faqs/compression-faq/part1/ http://www.faqs.org/faqs/compression-faq/part1/