The main takeaway for me is cyclical catastrophism. About every 6,000 to 7,000 years there is a pole shift where the crust slips over the mantle and the poles shift up to 90 degrees before returning to the general neighborhood (Hudson Bay was either the last pole or the pole before). This plays out in a day but it causes crustal displacement which drains lakes, floods valleys, causes tidal waves on every coast, all around chaos. Over the course of seven days the waters drain off and the earth has a fresh start. The book makes the case that the Adam & Eve story and Noah story are much more fact than fable.