I liked this episode as well, espeically once he started to get into black holes. Although its all a pretty basic explanation of everything and most of it I already know (so far anyways).
I really don't look at the 6500 years thing as a "shot", again its just him telling the truth. I was watching Tyson's interview on Colbert from a couple weeks ago and Colbert asked him what he thought would surprise Carl Sagan the most about our society today, and Tyson said it was the fact that we still had to fight for science to be relevant and listened to. I think you can tell Tyson is frustrated with the apparent unwillingness to learn and be taught by many people. But if you watch the show, you can see how this has been the case throughout all recorded history. New ideas and discoveries are often met with resistance and hostility.
I personally just don't understand the idea of it being a "shot" and young earthers. there should be "shots" at these people. Someone needs to shock everyone into reality. They are wrong. There is no debate on that at all. And I don't think we need to try and be sensitive to people who actively preach inaccuracies. They need to be told that they are wrong. And above that, they need to be told what we actually do know to this point. Tyson is very open about where they have lapses in knowledge and still aren't sure on things, which is something religious zealots never are and it's an issue. You have to be open to be corrected and in the face of uncertainty, embrace it and strive to discover it. We're beyond just making something up and preaching it as truth. It's ok to NOT KNOW.
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