[0xndavd]

That's true. Was a bit reluctant of going there, afraid it might made the topic more confusing to some. But I think I will include it, yes. Thanks.

Regarding being a 2D being I must disagree :), even though we are looking at such 2D demos we have 2D vision and are able to comprehend that "2D universe" fully, therefore we're still 3D creatures.

[jimmySixDOF]

There is also the concept of Visual Reorientation Illusions (Necker Cubes being the most familiar) which give some idea of the dimensional boundary translations etc. 1<>2<>3 and some 3<>4

There is a Facebook group and this account on X is collecting VRIs https://twitter.com/VRIs_Hugh