[essayist]

Study from 45 years ago:

Heinz von Foerster’s 1970-1971 experiment at the Biological Computing Laboratory for apprehending the fourth dimension is unique ... combining four dimensional geometry, stereoscopic vision, and joystick manipulation of objects on the screen. ... The fourth dimension was chosen as the knowledge to be acquired because there was no chance that any subjects would have attempted such knowledge before the experiment. By allowing the physical “grasping” of the visual object, where one hand coordinated movement on three axes in the 3rd dimension, while the other similarly controlled three axes of movement in the 4th dimension, subjects were able to intuitively figure out that the strange succession of transforming 3D objects they were seeing (with 3D glasses) were cross-sections of a single 4D object.

http://psychedelicsandlanguage.com/dimensionality/

Disclaimer: I studied with von Foerster years ago, and he'd mentioned this. I only today found this online reference. I want those 4D Toys. Steam, here I come.

[romwell]

The next thing to come from the same person, Miegakure[1], is going to be even more epic and mind-blowing. But it will take a while for it to be done.

[1]http://miegakure.com/