everyday society, quite literally out of touch. To make matters even worse, the religious authorities in typical style had added to the original rules a whole tranche of legislation about exactly how clean people might be made unclean. See if you can make sense of this, for example: ‘If an unclean man stands under a tree and a clean man passes by, the latter becomes unclean. If a clean man stands under a tree and an unclean man passes by, the former remains clean. If the latter stands still, the