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From: Harry Mason <spam@no.spam>
Subject: Re: impossible figure
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|-|erc wrote:
>              __
>             / /\
>            / /  \
>           / / /\ \
>          / / /\ \ \
>         / /_/__\ \ \
>        /________\ \ \
>        \___________\/
> 
> 
> Anyone ever drawn the upwards water fall, one of Escher's impossible
> drawings.

I've tried a few times to draw Escher, but it's so difficult to do his works
justice in ASCII art.

Here's another mathematical figure; not impossible, but confusing. The rings
cannot be separated, yet if you remove one the remaining two are not linked.

        __,---.__   __,---.__        
     ,-' _,---._ `-< _,---._ `-.     
   ,' ,-'      ,^-. `.      `-. `.   
  / ,'        / ,' `. \        `. \  
 / /         / /     \ \         \ \ 
; ;         ; ;_,---._: :         : :
| |        ,| |_,---._ `-.        | |
: :      ,' : :       7-. `.      ; ;
 \ \    / ,' \ \     / / `. \    / / 
  \ `. / /    \ `. ,' /    \ \ ,' /  
   `. Y ;_     ;,-' ,<     _;-' ,'   
     `| |_`"""'__,-;__`"""'__,r'     
      : : `"""'       `"""' ; ;      
       \ \                 / /       
        \ `.             ,' /        
         `. `-._     _,-' ,'         
           `-.__`"""'__,-'           
             hjm`"""'                

-- 
Harry Mason ("hjm200.ecs@soton@ac@uk" =~ tr/@./.@/)