I hit the thumbs up button because this is an interesting and thought provoking link.
I'm not sure about the diverging paths bit.
And I didn't see any new source of helium, which we won't have in another decade. And is essential for practically all modern technology.
I noticed that bit as well, but I guess they can't cover everything, Sure does make you think though. If granted immortality with death when I wish I have no idea when I'd wish to go; on one hand it'd be fascinating to watch humanity evolve over hundreds or thousands of years, but on the other, devastating to watch everything we know today dissipate. We'd become obsolete, and even more so in the sense that the elders of today are with modern technology.
Also, @DAB: Worked fine in my Chrome, updated to the latest Canary Build.