I've never bought any of the Hollow Earth (HE) hypotheses, nor the Moon-based species hypotheses either, but I've never gotten to the point where I would reject them so vehemently I would take them off the table completely. My biggest problem with Hollow Earth discussions are the fact that, truthfully, we know a lot about the crust, mantle, and other internal workings of our planet....far more than what the general public realizes, I think. We have moderately accurate mappings of these layers and are coming ever-closer to being able to identify large pockets of inhabitable bubbles or massive underground seas. So far geological science has come up with absolutely no evidence of such things. These talks seem to pointedly avoid the
work and evidence performed by geologists which make no mention of features which would evidence subterranean civilizations (large, marked entry points; navigation markings; hints of construction, architecture, manufacturing, technology all performed under ground...).
Now, you can argue the conspiracy point...
"We 'do' know all about the HE inhabitants but geologists, the government, the military etc. ... cover it all up!", but that's a serious stretch. Private citizens splunk all the time, finding new cave systems, exploring the depths of our crust frequently, and sooner or later a sufficiently dramatic finding would be had which would reveal the HE civilization and subsequent cover up. That's simply not occurred.
With all that said and my skepticism still high, I very much enjoyed the episode. Bosley comes across as articulate, well-mannered, and good natured. His stories were entertaining and over-all had a B-rated movie goodness about them. I'm looking forward to the next episode.
Peace.
J.