There is a Dr Seuss tale about two creatures called Zax, one north-going and one south-going who while travelling along their paths one day meet face to face on the plains of Prax. Neither is willing to step to the side so that they may continue in their paths; instead they vow to stand there face to face as the days, seasons and years pass them by. Eventually a city and highway is built around them and the tale ends with them still standing there refusing to budge.
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