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"I long ago realized that I could reach far more people by writing something, than by walking down the street with a banner."
- John Brunner

Ersatz Window  
  A display device used in a room without an actual view of the outside; it shows a projection of a real scene.  

After a day of useless work, Joe Fernwright trudged back to a location that he referred to with the word "home."

"Home" consisted of a room on a subsurface level of a huge apartment building. Once, the Jiffi-View Company of greater Cleveland came by every six months and created a 3D projection, animated, of a view of Carmel, California. This "view" filled his room's "window," or ersatz window. However, of late, due to his bad financial situation he had given up trying to imagine that he lived on a great hill with a view of the sea and towering redwoods; he had become content - or rather resigned - to face blank, inert black glass.
From Galactic Pot-Healer, by Philip K. Dick.
Published by Berkley Publishing in 1969
Additional resources -

This device required another component to be fully functional; see the entry for psycho-lease encephalic gadget.

Compare this to the sky ceiling from Return from the Stars, a 1961 novel by Stanislaw Lem.

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Additional resources:
  More Ideas and Technology from Galactic Pot-Healer
  More Ideas and Technology by Philip K. Dick
  Tech news articles related to Galactic Pot-Healer
  Tech news articles related to works by Philip K. Dick

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