Rememberthis ? Still reasonably crazy ! But mayhap a petty less so after take a look at David Goldman ’s possibility of how exactly this contraption was put together :
https://gizmodo.com/watch-eschers-impossible-perpetual-motion-waterfall-bro-5762030
It ’s amazing what a small impel linear perspective and measured editing can do . Remember , though , that this is consummate conjecture . There ’s still a distinct possibility that the literal answer is magic . [ BoingBoing ]

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