From _Tunnel in the Sky_: http://en.wikipedia.org/wiki/Tunnel_in_the_Sky http://en.wikipedia.org/wiki/Tunnel_in_the_Sky "Send up a smoke signal." "We've discu

From _Tunnel in the Sky_: http://en.wikipedia.org/wiki/Tunnel_in_the_Sky http://en.wikipedia.org/wiki/Tunnel_in_the_Sky "Send up a smoke signal." "We've discussed that We don't want just anybody and we don't want to advertise where we live. We want people who will strengthen the team." "That is what the engineers call a self-defeating criterion. The superior woodsman you want is just the laddy you will never find by hunting for him. He may find you, as you go tramping noisily through the brush, kicking rocks and stepping on twigs and scaring the birds. He may shadow you to see what you are up to. But you won't find him."