Yes, very good - thanks for posting.
It certainly is more engaging than a table of data. I wonder if there is a more 'raw' version of this available? What I would really find interesting would be to do what he did, to be in control. I'd like to move the 'scrub bar' to any point in time I want, see/hear the annotations, and then click a circle to break it into its parts.
One overall message I got was that a rising tide lifted all boats. Looks like the LE of the poorest nations now exceeds the LE of the longest living nations of 200 years ago. And every circle appears to have increased in wealth significantly (there were very many below $400/year, now very few). For all the talk about 'class warfare', I think we should be thankful that while there are relative disparities, it didn't come at the expense of any 'circle' (as far as I could see), though that 'circle' didn't share in the wealth as much as others. It could be worse, and I'm sure the reasons are complex as to why it is as it is (but I'll wager it is largely due to corrupt/unstable governments in those areas).
-ERD50