ok, let me first say this is a genuine question that is not meant to offend anyone. i notice that a lot of you posters who excel in math and sciences and all of that hard stuff, make numerous grammar mistakes. the poster who has frylock as his avatar regularly uses the word you're when your is most appropriate. i am not a grammar Nazi by any means. this is especially true, since although i am exemplary at english i cant type for ****. however i cant fathom how someone can be so brilliant at physics, and not understand basic english concepts. unless the posters on this board are not native to the english language, which in that case kudos for being decent at it, as your second language.