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Original Usenet message from alt.ascii-art, 25 Oct 1997.
Re: Illusions and impossible things :)

Re: Illusions and impossible things :)

In article <OD1...@upnetnews02.moswest.msn.net>, Brock Kevin
Nambo <new...@earthling.net> writes
>>>>               ________
>>>>              /\       \
>>>>             /  \       \
>>>>            /    \       \
>>>>           /   3  \_______\
>>>>           \      /       /
>>>>         ___\    /   ____/___
>>>>        /\   \  /   /\       \
>>>>       /  \   \/___/  \       \
>>>>      /    \       \   \       \
>>>>     /      \_______\   \_______\
>>>>     \      /       /   /       /
>>>>      \    /       /   /       /
>>>>       \  /   1   /\  /   2   /
>>>>        \/_______/  \/_______/ 'logicko'
>>>
>>>what so impossible about this,
>>>it looks like 3 cube
>>>looks like cube 1 place on top of cube 2 cover a corner of cube2
>>>and cube 3 place on top the side of it
>>>
>>The bottom of cubes 1 and 2 are in line. The top of cube 1, however, is
>>further back (being behind cube 3) than the top of cube 2, even though
>>they appear to be balanced at the same angle.
>
>No, he's right.  Somebody looking at the picture doesn't necessarily assume
>the sides line up; I didn't see it.  This figure wouldn't stand up very well
>on its own though--
>
>My version of it:
>set one and two down, standing on their edges (may be tricky.)
>put three onto the top edge, so that it pushes one away from and two towards
>you.
>About halfway down, it will look like this.  continue, and you will get...
>
>         ____________________
>        /\    /\    /\       \
>       /  \  /  \  /  \       \
>      /    \/    \/    \       \
>     /  1  /  3  /   2  \_______\
>     \     \     \      /       /
>      \    /\    /\    /       /
>       \  /  \  /  \  /       /
>        \/____\/____\/_______/
>
>(I can't do a perspective view of that :(.. )
>Anyway, it will be three blocks in a row, standing on their edges, in order
>(front to back) 2, 3, 1.
>
>Do you see what I mean?

I think I follow.

Looking at it again, it is ambiguous. The perspective of the original
hasn't translated very well into ascii. I have tried to illustate my
poor explaination below. It is based on the same play on perspective
that Escher's waterfall uses (Turn your head on its side):

               ________                         ________
              /\       \                       /\       \
             /  \       \                     /  \       \
            /    \       \                   / /\ \       \
           /   3  \_     _\                 / /  \ \       \
          /\      /\      /\               / /    \ \       \
         /_      /  \_     _\             / /      \ \       \
        /\      /   /\       \           / /   /\   \ \       \
       /      \/___/  \       \         / /   /  \   \ \       \
      /       /    \   \       \       / /   / /\ \   \ \       \
     /      \/______\___\_______\     / /   / / /\ \   \_\_______\
     \      /       /   /       /     \ \   \/_/  \ \  / /       /
      \    /                   /       \ \    /----\-\- /       /
       \  /   1           2   /         \ \__/------\- /       /
        \/_______/__\/_______/           \/_/        \/_______/ 
                                          

-- 
Tom  Harvey  | Newsgroup correspondence should be kept to newsgroups.
 tom@tomh.   | Personal correspondence: UCE spoiler in use.
demon.co.uk  | For further details: http://www.nospam.demon.co.uk

 

Original message headers
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From: Tom Harvey <tom...@nospam.demon.co.uk>
Subject: Re: Illusions and impossible things :)
Date: 1997/10/25
Message-ID: <3Qz...@tomh.demon.co.uk>#1/1
X-Deja-AN: 284916688
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References: <aEU...@post9.tele.dk.nospam> <344...@comports.com> <yAA...@tomh.demon.co.uk> <OD1...@upnetnews02.moswest.msn.net>
Newsgroups: alt.ascii-art
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