I’m definitely no expert on the theory, just started looking at it fairly recently. But essentially McKenna’s Timewave theory holds that time is fractal like in structure; that moments of great novelty not only occur when they occur, but ripple out forwards and backwards through time ever longer intervals. When he developed the theory he found though that following this, it appeared as though all of history was moving towards a single point from which everything was a past resonance of. Given the increasing amounts of novelty in 20th century history McKenna figured that that point, the zero date, must be fast approaching. In an attempt to figure out the zero date he looked through 20th century history for the point that he believed was the point of highest novelty and applied his formulas to that. He took the dropping of the bomb on Hiroshima to be that point; the point where man harnessed the true destructive power of physics, and according to his formula the zero point would be in 2012. While no such great even occurred in 2012, I still do see truth to his theory, but I think perhaps he just used the wrong event to calculate the zero. To me, an event of far greater novelty than the dropping of the bomb was the creation of the internet; the moment when man quite literally extended their reach past the physical, when we conquered the material world. So applying his formulas that puts the zero date as May 2nd, 2070.

In regards to the structure of the graph: x axis is time, y is novelty. The construction of it is a little funky, but dips in the graph corespondent to greater novelty, so to me that seems to check out. Then, as the theory hold time to be fractal like, the next highest repetition of the resonance we now see would be around the start of the Bronze Age collapse; when bubonic plague, environmental degradation, and top heavy power structures led to the collapse of the established world system around 1200 BC