I omitted reference to convergence on a limit from my brief note because it's self-evidently obvious to even the most casual observer that the argument is no le

I omitted reference to convergence on a limit from my brief note because it's self-evidently obvious to even the most casual observer that the argument is no less specious than saying that one cannot simply walk into Mordor. There is a practical limit to human height, and rather than simply converging upon it while remaining less than that limit by some nonzero amount, humans will actually reach that height in a finite duration of time and then stop evolving altogether, at least along that particular dimension.