Anyone who has ever headed up a certain kind of restaurant can relate to the fatigue that seems to seep through the pores of this young man's skin. His red-rimmed eyes tell it all. He hasn't seen the sun in weeks and sleep is almost as rare as a day off. He's Paul Liebrandt of Gilt restaurant in New York. I don't know him from dog logic but from his portfolioand the look on his face, I'll bet he's a serious dude.