The Phaistos Disk of Minoan Crete (Stuff You Missed In History Class)

Like other artifacts that defy deciphering, this clay disk, found on Crete in the early 1900s, has puzzled researchers and stirred up controversy for decades. Is it a religious incantation, a calendar, a spell? Or is it all a pictogram hoax?
Interview:
http://www.missedinhistory.com/podcasts/the-phaistos-disk-of-minoan-crete/