...
Because it is looong, and it's about all the maniac symbolism and math nuts' wet dreams plotted out across the face of good old planet Earth, which is just goofy, even if true, and it probably is, or mostly, but I've had this on as a sort of background music to my sweating, and somewhere not long after the two-hour mark he started talking about the Pantheon and I realized I didn't know a lot of what he was pointing out about that building, and... wow.
I'm sparing you a lot of my doctoral work, even if it doesn't seem that way, but there really are some tasty bits of history and architecture and astronomy, etc, in here and you just might enjoy it.
...
Okay. I was only listening with half an ear, and dozed in a couple spots, but also lasered in on a few spots. It occurs to me, contemplating his piece on the astronomical origins of our units of measure, that this resolves at least partially my beef with the geeks who think that math is God, or that numbers exist in the same sense that planets exist, instead of it being a form of language that comes at things by quantification instead of regular old metaphor... attempting to give form to abstraction.
You might have noticed that the distances used to give body to the units of measure were measured with units of measure... to arrive at numbers... which means they're abstractions stridently poking the air at concrete... not God, not planets... but they could "reasonably" be seen that way by people who have no inkling that advanced civilization came before our recorded history... or... well... what they call "recorded history"....
...
And, no, space aliens seems entirely plausible to me, but it could have been giraffes, or people, or trout, or Buckaroo Banzai for all it bears on the darn inescapable by now reality that millennia ago there was some unspeakably advanced intelligence at work on our planet.
.