>>>
>>>Bless you! :-)
>>>
>>>Clever but I think I know how it's done.
>>
>>Yeah, it's a question of angle and perspective. Games magazine, from time to time, used to print such photos, but much larger with people standing in impossible enclosures etc. Then they'd show the picture from another angle, and you could see where things are not attached, bars are shortened or lengthened, and such.
>>
>>But it's still a really neat trick.
>
>Yeah, it looks great. It's different in that it's essentially 2-D, whereas Escher's orig drawing was of a terahedronical area wasn't it.

Escher did a whole bunch of drawings with that sort of concept built in. His waterfall, or the guys ascending the staircase are examples of the same idea. I bought a book back in the late 60s of his work, and had some of them blown up to put on my walls. When I went back to the printer to get the book and the blowups, the guy asked me if he could hold on to it for another day to do some for himself.