Half a croissant, on a plate, with a sign in front of it saying '50c'
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polarized road signs

minimize extraneous information with polarized light filters.
  (+3, -2)
(+3, -2)
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If one created a road sign with different messages at different polarities, people could tune to their preferred language by adjusting the filter on their end - could be either a polarized windshield or sunglasses as long as the angle is adjustable.

Also could be used to opt out of billboards such as the tampon adverts.

prometheus, Oct 04 2001

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       Could be very benefitical if widely used in this age of "visual data inflation".
Aykam, May 15 2002
  

       Wouldn't this only give you two different signs? Any other polarisations would just give a mix of the two....   

       Although I like the idea of opting out of certain ads...
yamahito, May 15 2002
  
      
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