I don’t know, there was the wheel, and now there’s cars. Then there were cars, and soon there will be flying cars. We as humans are constantly growing and adapting, learning new things every day. I mean sure we’re not building empires or creating the next wonder of the world anytime soon, but we’ve advanced so far in terms of weapons and civilization, to prevent as much innocent casualty as possible. We’ve only just started exploring that the sky is no longer the limit, quite literally, and that’s not something even Alexander the Great was able to accomplish.