What do you think I would not undestand? Hinton's Cubes share since ages a bad reputation of disturbing the minds of his followers, fitting nicely to contemporary theories of learning and habit-development of the brain. Only two mathematicians seem to have profited from an exposition to them in their childhood. Ans the one who played around with constructing 3D/4D-analogues to Penrose/Escher 2D/3D-"impossible figure" doubted that such an endeavor woud threaten his health. The info on Talmud etc. came from a well known scholar. Both examples fit to the questions above.