boingboing rssfeedsspamassassintaintorg url httpboingboingnet85538591 date supplied img httpwwwcraphoundcomimagesescherlegojpg lego enthusiasts implemented three eschers optical illusion paintings including ascending descending pictured using lego link1 discuss2 _via mefi3_ 1 httpwwwlipsonspwpblueyondercoukescherascendinghtml 2 httpwwwquicktopiccomboinghghyxj6d46evy 3 httpwwwmetafiltercom wed 09 oct 2002 080036 0000 mc escher lego