L'optimisme, ce n'est pas le refus de voir ce qui ne va pas, c'est le désir de ne pas s'y attarder. // Donne moi le courage de changer les choses que je peux changer, la sérénité d'accepter celles que je ne peux pas changer, et la sagesse de distinguer entre les deux. (Marc Aurèle) // Don't raise your voice; improve your argument. (Desmond Tutu) // Be the change you want to see in the world. (Gandhi)

28.10.15

The Washington Monument was disintegrating - Why ? 

Why? Use of harsh chemicals
Why? To clean pigeon poop
Why so many pigeons? They eat spiders and there are a lot of spiders at monument
Why so many spiders? They eat gnats and lots of gnats at monument
Why so many gnats? They are attracted to the light at dusk.


Solution: Turn on the lights at a later time.
Libellés :

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