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I can't be bought but can be...

I can't be bought but can be stolen with a glance, I'm worthless to one but priceless to two. What am I?

Correct answers: 51

The first user who solved this task is Djordje Timotijevic.

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A Moral Question

One man said to another, "I didn't sleep with my wife before I got married. How about you?"
The man replied, "I don't know. What was her maiden name?"

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Simon Lake submarine patent

In 1896, inventor Simon Lake was issued a U.S. patent for his "Submarine Locomotive" (No. 557,835), which he designed with underwater salvage operations in mind. It was fitted with traction wheels to travel the water-bed, and a crane hoist at the front. A diver's compartment with a bottom door could be filled with compressed air at the same pressure as the surrounding water to enable the diver to exit and enter the vessel underwater to have "an aperture on one side closed by means of a vibratory disphragm, and a combined air-supply and speakingtube connecting ... with a diver's helmet." He improved his design with a later patent issued 20 Apr 1897 (No. 581,213). On 16 Dec 1897 he demonstrated submarine Argonaut.«

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