Hello, friend! I wondered the same thing about what that meant, but I didn’t ask for clarification, because everything about time here and there confuses me. We’re linear, but in the high realms, time is circular, and I just can’t wrap my head around that stuff.
As far as science goes, I think their knowledge is quite incomplete, but I don’t have all the pieces and probably never will in this lifetime. I think the world was very advanced when it started out in 5D. I don’t know where that or the Fall fits in. It seems to me it happened before ancient history, but who knows?