# Quotient space

In topology and related areas of mathematics, a quotient space (also called an identification space) is, intuitively speaking, the result of identifying or “gluing together” certain points of a given space. The points to be identified are specified by an equivalence relation. This is commonly done in order to construct new spaces from given ones.

— Wikipedia on Quotient space

2010.07.11 Sunday ACHK

# Time and money

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A few days ago I realized something surprising: the situation with time is much the same as with money. The most dangerous way to lose time is not to spend it having fun, but to spend it doing fake work. When you spend time having fun, you know you’re being self-indulgent.

— Paul Graham

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2010.07.11 Sunday $ACHK$

# 個人大組織 5.4

「個人通常正常，而團體通常瘋狂。」所以，「追求『being popular』（受歡迎）」是不智的。

「受歡迎」，即是「受到群眾的認同」。而「群眾」通常也是瘋狂的。所以，「追求『受歡迎』」，就相當於「追求『瘋子』的認同」。

— Me@2010.07.10