3 ms·
I'd watch out for the Jevons paradox though: http://en.wikipedia.org/wiki/Jevons_paradox http://en.wikipedia.org/wiki/Jevons_paradox
by adamjernst 14y ago
I'd watch out for the Jevons paradox though: http://en.wikipedia.org/wiki/Jevons_paradox http://en.wikipedia.org/wiki/Jevons_paradox