Maybe, saying "twenty" isn't enough of an improvement over "two-thousand" to make it worth the complexity. Compare that to "one-thousand-nine-hundred" vs "nineteen".
Also, years less than 10 years ago which are still referenced a lot then require a switch to a different reading convention. This, I guess, wasn't a big deal from 1999 to 2000 because, "twenty-oh-oh" was too awkward and, hey, it's two-damn-thousand!
I find this peculiar. Hydrogen balloons were used for surveillance in the Civil War, 40 years earlier. It would have been easy to attach a camera to a small hydrogen balloon, with a clockwork device to puncture the balloon to bring it down in a reasonable distance.
> It would have been easy to attach a camera to a small hydrogen balloon, with a clockwork device to puncture the balloon to bring it down in a reasonable distance.
Maybe, but homing pigeons have a few advantages. They return to their home "automatically" and they are not as conspicuous flying through the air.
I think the idea of owning a drone and being able to capture 4K 60FPS video of the earth is cool and all, but I'd much rather strap a pinhole camera onto a Phantom and recreate photographs like these. Hmm, now that I think about it...