Always an honor to get back on Joe's podcast, it was a fun conversation - I hope you enjoy it as much as I did!
I am fascinated by your work in pointing out the mystery of the advanced technologies at work in pre dynastic Egypt. It is so curious that that this advanced civilization left no Graves, no genetic material, no grave goods! Have you considered that perhaps these advanced tech items were imported? And that perhaps a tech class( ie advisors, engineers from that civilization)- perhaps secretive was instrumental in creating megalith architecture?
I have discovered a 1969 book "The Mythical Origin of The Egyptian Temple" by E.A.E Reymond. It's her translation of the inscriptions at Edfu about the Temples for Horus, Re and the first arrivals. The descriptions are amazing describing the original sizes and they are huge. A preview is available on Google Books