Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
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How many?
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Four? or Three?
- Thread starter Gliderman8
- Start date
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OP
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I was thinking seven :rolleye:
OP
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Yes!
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Online
left or right?
G
Guest
Guest
Guest
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Twelve!
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Twelve? nah, it's forty-seven.
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I found out this optical illusion has a name -blivet -
In its most common usage, the word "blivet" refers to an indecipherable figure, illustrated above. It appeared on the March 1965 cover of Mad magazine bearing the caption "Introducing 'The Mad Poiuyt' " (the last six letters on the top row of many Latin-script typewriter keyboards, right to left), and has appeared numerous times since then. An anonymously-contributed version described as a "hole location gauge" was printed in the June 1964 issue of Analog Science Fiction and Fact, with the comment that "this outrageous piece of draftsmanship evidently escaped from the Finagle & Diddle Engineering Works" (although something else called a "hole location gauge" had already been patented in 1961[2]).The graphic artist M. C. Escher used these types of figures as the basis for impossible three-dimensional compositions in many of his woodcut prints.
In December 1968 American optical designer and artist Roger Hayward wrote "Blivets: Research and Development" for The Worm Runner's Digest in which he presented interpretations of the blivet.
I was using the more conventional military term, "blivet", though, when I was referring to a builder's 383 built Chevy motor in a bugeye Sprite -- "10 pounds of sh-- in a 5 pound bag.
OP
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Interesting background Rick; thanks for the researching it.
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Hmmmm.... I always heard another definition of blivet....
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Still not the one....
Matches Rick's final comment.
Matches Rick's final comment.
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