4th Dimension made easy

:

The 4th Dimension explained by Carl Sagan.


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41

The 3 Doors

You need to escape and only have three doors to choose. Behind Door #1 is deadly poisonous gas. Doo...

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Ric Axlerod
Posted 1 years ago
18

Crazy Gyroscopic Escapement ^Watches

The gyroscopic escapement module is a wonder. It remains flat regardless of the movement of your wri...

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Jean Vallier
Posted 1 years ago
20

Which prison hat are you wearing?

Thought this was a really good logic puzzle.

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Max King
Posted 11 months ago
213

Abstract Thinking

This is how I feel. Does anybody else relate to this?

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Allison Eddy
Posted 11 months ago
17

The Secret World of Hairsprings ^Watches

Watch the secret of the hairspring from a private manufacturer. The hairspring is the regulating ...

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Yao Zhang
Posted 1 years ago