It goes into detail about its construction and purpose. Think electrical.
Basically, Biblical manna was mono-filimental gold. The Ark was able to create it because of its great electrical generating capability based on its construction, allowing it to create the mfgold.
He goes into a bunch of detail and provides a bunch of very interesting data to back up his conclusions.
Do I buy it 100%? No. But I’m not going to throw it out until its disproven either.