====== BRAINBOX PROBLEM SOLVING - QUICK-TRICKS =======

=== Trick #1 ===
How can you tell if a wind is blowing inside a box 

The box has five doors (one on each side and on the top).

You can pass a things between any of the doors but:
  - the box is made of thick metal and you cannot see into it (it is like a safe)
  - you cannot measure the wind while any of the doors are open.
  - you cannot communicate in any way with the anything in the box when the doors are closed
  - your device cannot use a device that measures and stores the result and read it later.


How can you tell if a wind is blowing inside the box?

And while your thinking, here's a story about cats: https://www.youtube.com/watch?v=IOYyCHGWJq4

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