They pitched their tent under the stars and went to sleep. Sometime in the middle of the night Holmes woke Watson up and said: "Watson, look up at the sky, and tell me what you see." Watson replied: "I see millions and millions of stars." Holmes said: "And what do you deduce from that?" Watson replied: "Well, if there are millions of stars, and if even a few of those have planets, it’s quite likely there are some planets like Earth out there. And if there are a few planets like Earth out there, there might also be life." And Holmes said: "Watson, you idiot, it means that somebody stole our tent."