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How do blind people perceive the world?

Ancient Greek ruins

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One day old human baby sleeping in a hospital. Newborn, dreaming, infant, napping sleep. reproductive system.

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Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Berries and leaves of the bittersweet nightshade (Solanum dulcamara) plant. Poisonous plant

7 of the World’s Deadliest Plants

Ethel Rosenberg arrested in August 1950. Photograph dated Aug. 8, 1950. American civilians executed for espionage. Spies, communists, Julius Rosenberg

Spies Like Us: 10 Famous Names in the Espionage Game

Shadow of a man holding large knife in his hand inside of some dark, spooky buiding

7 of History's Most Notorious Serial Killers

Aurochs. Bos primigenius. Skeleton. Extinct animal. Skeleton of an Aurochs, an extinct wild ox.

6 Animals We Ate Into Extinction

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D-state dream deprivation message dream manifest content secondary elaboration secondary revision dream book sleep terror latent content dreamwork hypnosis intuition attention

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Sigmund Freud

Sigmund Freud

Austrian psychoanalyst