Pessimist sees nothing but dark in the tunnel.
Optimist sees light in the end of the tunnel.
Realist sees light from incoming train.
Engine-driver sees three idiots standing on the track.
Pessimist sees nothing but dark in the tunnel.
Optimist sees light in the end of the tunnel.
Realist sees light from incoming train.
Engine-driver sees three idiots standing on the track.
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