it would have to be a very fine , precise alteration ; it couldnt be so much that they wouldnt work at all , but only just enough so theyd usually still work and would only occasionally stick for a moment making it so id have to turn them slightly one way and then slightly the other several times , with the whole world watching me , judging me as an idiot not able to get into his own house , hammering on the door and weeping with shame .