The giant Machnov
Died in his thirties from symptoms consistent with acromegaly.
This man picture below was 8'9
And unable to walk.
This Elizabethan woman was measured at 8'4. He name was Trijntje Keever.
And she died before she reached 18.
Where, pray tell, is there evidence that human DNA cannot produce such giants?
There seems decent empirical evidence to suggest that growing tall tends to lead towards health complications. Moreover - it can be shown that increasing height increases volume by more which puts pressures on the heart that a bigger heart cannot cope with leading to circulation issues. There are also issues with information making its way around the body...six footers already have a delay of about a tenth of a second. It could take half a second before a 25footer even knows whether his foot has touched the floor.
There are many issues with being that big.