Krtel,
If you read through the posts in this thread, you’ll see that no one here is claiming any medical expertise except yourself. Relatedly, no one here has said that genetics is not complex. However, some of us know people in the medical sciences. I was a university professor for many years, and I know many people in the medical sciences—some who work at top universities here and in other countries.
I realize that your urologist cousin does not think that there is any correlation between height and penis size, but, as the philosopher Aristotle said, “One swallow does not a summer make!” Similarly, one urologist’s opinion does not a medical doctrine make. Once again, I wish you would actually read what I have written in my posts. I’ll repeat myself: I have been told by a number of urologists that there is a correlation between height and penis size. There you go: Medical experts differ in their opinions. What else is new?
Moreover, I am more than happy to have you or anyone else refute my opinions. Only, do not use insults to do it. I can tell you as a university lecturer on critical thinking, that that is not an effective method. Rather, use evidence. Specifically, can you refer us unenlightened ones to any reputable journal articles (in English, please) that demonstrate, as you assert, that there “is no chance in the world that anyone could find a correlation between” height and penis size. This is an extremely strong claim. You are saying (1) that no correlation has been found and (2) that no correlation could be found. I do not know whether (1) is true or false, as far as published medical research goes. But, again, speaking from my area of expertise in critical thinking, (2) is a claim that neither you nor anyone else could demonstrate now or at any time in the future. Medicine is not an a priori science; no matter what we think we know now, future discoveries may (and often do!) lead us to revise our opinions. For this reason, terms like “certain,” “never,” “no chance,” etc., are rarely in the vocabulary of a competent scientist.
You claim that height and dick size are controlled by different genetic pathways. I’m more than happy to take your word on that. However, MX is right: It does not follow from this fact (if indeed it is a fact) that there is no correlation between the two traits. Once again, in the language of critical thinking, your purported conclusion is a “non sequitur.” For the conclusion to follow from your one premise, you would also have to demonstrate at least the following: (1) that there is no genetic or physiological interaction at all between these two pathways and (2) that these two pathways do not derive from some common genetic structure. Either (1) or (2) is sufficient to refute your claim. In other words, you would have to demonstrate that the genetic structure controlling height and the genetic structure controlling penis size are entirely independent systems, that they are as distinct from each other as a cat and a fish. I may not know a lot about medicine, but I do know that the human body is a system; its sundry parts are physiologically and, yes, genetically integrated. This does not entail that height and penis size are correlated in any significant way, but it does lend a certain bias to this view over yours.