Yeah, I think the "ambiguous cylinders" are more impressive. I've implemented some of his figures and made available for download here: https://github.com/Matse

Yeah, I think the "ambiguous cylinders" are more impressive. I've implemented some of his figures and made available for download here: https://github.com/Matsemann/impossible-objects https://github.com/Matsemann/impossible-objects What's cool about these is that they're tangible. And for some of the shapes, it works well even when looked at with two eyes (which supposedly should tell your brain the trick) and from not the perfect angle.