Comment: *cough* *cough* ... refresher :

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Cyril's picture

*cough* *cough* ... refresher :

*cough* *cough* ... refresher :

Well, it all depends what one means by "impossible" and in which model of scientific knowledge :

http://en.wikipedia.org/wiki/Perpetual_motion#Use_of_the_ter...

"Cyril" pronounced "see real". I code stuff.

http://Laissez-Faire.Me/Liberty

"To study and not think is a waste. To think and not study is dangerous." -- Confucius