I perfer to know an a lot about anything that involves my health or money :-)

There are too many good sites on the internet to be uninformed about how an airplane flies. It just requires a little study and a reasonablely open mind about what is read. Each piece of aero learned can lead to another.

You should never set an upper limit to what you know. I started working as an aero eng in 1965 and find that I learn something each day, I am constantly amazed at the intelligence of professionals and laymen alike in the field (but then I am easily amazed, I hope it is a desireable characteristic).