He waited in silence for the blindfold to be tied firmly at the back of his head. 'Right,' said Wilkins, emphatically. 'That should do. How many fingers am I holding up?' 'Three,' said Thomas. 'God damn it to hell, how did you know that? Can you see through the cloth?' 'No. It was a guess.' 'Well you're not supposed to guess. For crying out loud, I'm trying to make sure that you can't see where we're going. We're not here to play guessing games. How many fingers am I holding up?' 'I've no idea. I can't see a bloody thing.' 'Good. It was four, by the way. Not that it matters. Now shut up.