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Will humans keep getting taller?

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Re: Will humans keep getting taller?

#31

No. A human being 4.12E+12 meters tall, standing on the equator, would have their head moving at the speed of light due to the rotation of the earth. At that point, their experience of time would essentially stop, and reproduction would cease. Also, cosmic rays and lack of O2 would begin to distract the subject from reproduction with cumulative effects from suffocation and radiation burns long before evolution could…

We can indeed keep getting taller if the human height series converges

Re: Will humans keep getting taller?

#32

No. A human being 4.12E+12 meters tall, standing on the equator, would have their head moving at the speed of light due to the rotation of the earth. At that point, their experience of time would essentially stop, and reproduction would cease. Also, cosmic rays and lack of O2 would begin to distract the subject from reproduction with cumulative effects from suffocation and radiation burns long before evolution could…

You ignore that it's entirely possible to have an infinite, monotonically increasing sequence with a fixed upper bound. Yes, people could keep getting taller without ever exceeding some defined limit.

However we would begin to encounter problems as the sequence of heights approached said limit. The deltas would become smaller than the precision of our equipment, and later would become smaller than physically meaningful scales (i.e. length scale of an atom). In this limit, I think it would be reasonable to generalise "keep getting taller" to "probabilistically grow by the smallest physically meaningful amount on an arbitrarily long timescale", in which case this continues to be well defined as t→∞ even if it would be difficult to physically observe.

Re: Will humans keep getting taller?

#33
post #32

No. A human being 4.12E+12 meters tall, standing on the equator, would have their head moving at the speed of light due to the rotation of the earth. At that point, their experience of time would essentially stop, and reproduction would cease. Also, cosmic rays and lack of O2 would begin to distract the subject from reproduction with cumulative effects from suffocation and radiation burns long before evolution could…

You ignore that it's entirely possible to have an infinite, monotonically increasing sequence with a fixed upper bound. Yes, people could keep getting taller without ever exceeding some defined limit. However we would begin to encounter problems as the sequence of heights approached said limit. The deltas would become smaller than the precision of our equipment, and later would become smaller than physically meaningf…

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.

Re: Will humans keep getting taller?

#35
post #32

No. A human being 4.12E+12 meters tall, standing on the equator, would have their head moving at the speed of light due to the rotation of the earth. At that point, their experience of time would essentially stop, and reproduction would cease. Also, cosmic rays and lack of O2 would begin to distract the subject from reproduction with cumulative effects from suffocation and radiation burns long before evolution could…

You ignore that it's entirely possible to have an infinite, monotonically increasing sequence with a fixed upper bound. Yes, people could keep getting taller without ever exceeding some defined limit. However we would begin to encounter problems as the sequence of heights approached said limit. The deltas would become smaller than the precision of our equipment, and later would become smaller than physically meaningf…

You would be right if humans are made of numbers and not atoms.

Re: Will humans keep getting taller?

#38
post #23
post #20

Earlier quoted context omitted.

As a 200cm/6'6" man, I think the optimum height is 6'4" - you get all the benefits of being tall (social prestige, being able to breathe in crowds) and fewer of the disadvantages (clothes still fit, beds still fit, buses and planes still fit, don't hit your head on doorframes or light fittings anywhere near as much). If only I could go back in time and tell young vacri to stop growing at 6'4" :)

At 6'2", I wish I had either gone up to my projected 6'8" (I think based on the double at two metric) or stayed down at a mere 5-10"or 6'. Everything is too small for me... Long airline flights are excuciating, and even the height of common kitchen fixtures is really too low

what country do you live in? I'm your same height and I don't really have these issues.

Re: Will humans keep getting taller?

#40
post #32

No. A human being 4.12E+12 meters tall, standing on the equator, would have their head moving at the speed of light due to the rotation of the earth. At that point, their experience of time would essentially stop, and reproduction would cease. Also, cosmic rays and lack of O2 would begin to distract the subject from reproduction with cumulative effects from suffocation and radiation burns long before evolution could…

You ignore that it's entirely possible to have an infinite, monotonically increasing sequence with a fixed upper bound. Yes, people could keep getting taller without ever exceeding some defined limit. However we would begin to encounter problems as the sequence of heights approached said limit. The deltas would become smaller than the precision of our equipment, and later would become smaller than physically meaningf…

Forgive me if I've misunderstood, but isn't your proposed problem akin to Zeno's paradox of infinite distance, where we never reach anywhere because first we need to go 1/2 the distance, then 1/2 of that, etc.?

Which, of course, is resolved in math by limits, and in the real world by discrete units (i.e. atoms).

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