Crab,
I am glad that you find my education amusing. We are very luck to have the likes of Nick Lappos volunteering his knowledge to us all and I really appreciate him taking time to put us right. In a previous life I was a professional engineer and challenging the ideas of others and having your own challenged was part and parcel of getting the best solutions. As long as the likes of Nick are happy to educate us, I will continue to ask questions and present my own theories for scrutiny, however stupid they may seem. Hopefully it will make me a better aviator.