I always come back to the same thought when that question of "no evidence" comes up and I think maybe the "technology" was something that was harmonius with nature...that wouldn't be found after time. We are kind of conditioned to think hardware, metal, wires etc...when it comes to technology...but when you think of the human energy fields and how "electricity" works there are natural conductors besides what WE know right now...controlling matter with thought...etc...

And as for being on the verge of this event again? I think we are...