"1) if the kids around me had ADHD, why did they seem to unable to focus on anything at all? If I shared ADD with them, why was I still different?"
You don't know for sure they can't focus on anything. Maybe the things they could focus on were things you weren't there to observe?
"2a) Constructive projects do seem to be a farmer-originating interest, but if it is associated with ADD/ADHD, which is a hunter-gatherer trait, how can the two be reconciled?"
Trapping is one form of hunting, and involves elaborate construction:
https://www.gutenberg.org/files/17093/17093-h/17093-h.htm "2b) Both ADD and ADHD and constructive projects seem to be associated with the N personality type of MBTI, which seems to be more farmer-associated. So is being a 'night owl', which the author claims quite convincingly is a hunter-gatherer trait even though most people are not night owls. How can these be reconciled?"
Firstly, I can't stand MBTI, a Western model, and do not recommend anti-Westerners (as we here are all supposed to be) take it too seriously.
Secondly, humans hunting at night with prehistoric technology is likely to be inefficient. Humans do not have good night vision compared to most non-human prey, while using illumination will alert the prey. So I have no idea what that idiot is talking about. Herders, on the other hand, are known for herding at night to guard against non-human predators who do hunt at night. So it seems more likely to be a Turanian trait.
"When you wrote 'I have ADHD. They made me take amphetamines...' and 'Interesting post. I'd like to know what relationship, if any, ADHD has to high and low blood pressure...I'm only 5'10''' I thought you were talking about your self, but then you quote the second bit, but then you quote the bit about being 5'10''. Who are you quoting?"
PolincSocjus from the old board was made to take amphetamines. Mza9 from the old board is 5'10".
"I said they were ectomorphic because they lived in a very hot climate"
You are correct!
https://trueleft.createaforum.com/human-evolution/temperature-effects/"What do you think of non-farmer ectomorphs such as the Khoi-San and the Maasai?"
They should be prohibited from reproducing eventually, but they are welcome to help us destroy Western civilization first.
"Are they just ectomorphs due to climate rather than subsistence style?"
Yes. As a matter of fact, many of their women are far from ectomorphic:
https://en.wikipedia.org/wiki/Steatopygia"He also said that ectomorphic body types are absent in the areas of Africa into which the Bantu expanded, and I said the people living in those areas aren't pure farmers because the Bantu bred with the people already living there, and showed him this map.
https://upload.wikimedia.org/wikipedia/commons/a/ad/World_in_1000_BCE.png Is this the correct response?"
Your response is correct, but his claim itself is bullshit:


I don't understand how it is possible for anyone to still believe that certain body types are absent from certain ethnicities. All you need to do is look at athletes from all over the world competing in the same sport, and it is obvious that they have the same body type no matter where they are from, namely the type optimized for that sport!

The two guys to either side are obviously more racially similar to each other than to the runner.