how strange.
Especially it also has a crossed-eye mode, which I cannot test because I am only able to parallel eye seeing (nontheless red/cyan mode is the real thing).
I'm exactly the opposite. I can't do the parallel mode. I'am only able to cross-eye seeing.
EDIT: Now it turned out to be really odd. :?
I shifted two flat vbiews slightly by the cross-view, giving myself a wrong 3D information. It can't exist in 3D space. But both flats becuase of a LOOOONG living in 3D, are looking 3D. They are looking 3D and in 3D they should overlap and I shouldn't see each of them fully, but I did. :?
OK. It now seems to me as a half of key to the 4D. Why?
Take our 3D stereopair. Add another SLIGHTLY DIFFERENT 3D stereopair. If someone could match them into one grand-stereopair...

I don't live in four dimensions... at least not yet...