（安：對我來說，這個是一個嶄新的想法。）
哪個想法？
（安：你那個「地球人大部分是『瘋子』」的比喻。）
如果你覺得這個只是一個「比喻」的話，即是你未完全領會它的意思。
（安：這個牽涉到語意問題。如果「地球人大部分是『瘋子』」中的「瘋子」不是比喻的話，你就扭曲了「瘋子」這個字眼的意思。）
如果「瘋子」是指「瘋人院內的病人」的話，那當然不是每一個人也是「瘋子」。但是，如果「瘋子」是指「不理性的人」的話，地球人中，「瘋子」佔了大多數。
還有，即使假設，對於「個人」而然，「理性的人」比「不理性的人」多；對於「群體」來說，「瘋狂的機構」遠比「理性的機構」多。
— Me@2011.06.04
2011.06.04 Saturday (c) All rights reserved by ACHK
Fermat’s principle is the main principle of quantum electrodynamics where it states that any particle (e.g. a photon or an electron) propagates over all available (unobstructed) paths and the interference (sum, or superposition) of its wavefunction over all those paths (at the point of observer or detector) gives the correct probability of detection of this particle (at this point). Thus the extremal (shortest, longest or stationary) paths contribute into this interference most as they can not be completely canceled out.
— Wikipedia on Fermat’s principle
2011.06.04 Saturday ACHK
He began making something for himself, but then realized that it could benefit lots of people with the same problem.
— Wikipedia on Dropbox (service)
2011.06.03 Friday ACHK
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2011.06.04 Saturday ACHK
Physics Town 