Everything goes in circles, but at the same time gets better -- or, "better" -- so when we get back to the same point "on the ground", it's "at a higher level":

Everything goes in circles, but at the same time gets better -- or, "better" -- so when we get back to the same point "on the ground", it's "at a higher level": Evolution is a helix. AKA, a screw -- so in the long run, we're all screwed.