Cool Rules?

After a recent seminar where we read a Guardian article 'The Myth of Cool' which opined that cool was basically a conspiracy dreamed up by the UK record industry and an American ice-cream manufacturer,it got me thinking, what is cool?..what do you have to be to be cool?..hedonistic? Narcissictic? ironic? or can you be both 'cool' and good? A lot of 'cool' comes from the music and fashion industry. Your the frontman of a band,therefore your cool,you dress head-to-toe in Marc Jacobs,does this also make you cool? Personally i think its more than just a way of looking,talking or doing. Its a way of being.