Harry dreams: These people had found me in their stables, and now I am at some sort of banquet. All the other people at the banquet are looking at me. I know I have to blow the green horn or the red horn, but nobody speaks English and I don't know why or what the difference is. I know they have some mission for me and I think blowing one means accepting it and blowing the other means turning it down, but I have no idea which is which. I blow the green horn. Everybody starts celebrating, and now, *afterwards*, a translator tells me I've just accepted the mission (whatever it may be). "Well I would have blown the red horn, then, if I had known what it meant!" "You can't do that. You've accepted the mission."
