You're theory tells me you're a mechanical engineer w/ specialty in hydraulics and pipeline networks. Is that right? I'm into the service, maintainance and troubleshooting of wide-area wireless telecom systems. There's a suggestion that the drainage system is compromised. There's also a suggestion that the root cause is not within the pilosebaceous units or follicular units. It's also a suggestion that human physiology are factors in the predisposition to male pattern baldness. So there's still the question of 'what's difference between balding men and non-balding men within those parameters? still working on it ... to be continued.