Hi grommet I really like your avitar, I haven't found one for myself yet. I'm a chemist for a living, and your avitar reminds me of the dream that the guy who figured out the structure of benzene, he dreampt of a snake that chased its tail round and round unitll it finally grabbed onto it makiing a circle. And this is part of how he figured out benzene's chemical structure. Anyway, I think there's probably lots of smart people like us who don't naturally catch onto certain things, but when shown how to, or where to get the information ,a and given the proper resources all these things make sense. This site has a lot of good people on it for things like this.