為什麼普通的衍生品要叫plain vanilla option（還有swap等）？名字有什麼來歷？

02-16

因為plain vanilla就是普通的意思。喏，維基百科

Plain vanilla is an adjective describing the simplest version of something, without any optional extras, by analogy with vanillaice cream, the default flavour.

既然樓主說「等」了我就附送個段子。（其實大家都講的很好了，我硬插一腳就是為了不辜負史先生講下面這個笑話講了兩次。）

大家都知道最簡單的option叫歐式期權，然後比他複雜一點的那個叫美式期權吧。

為什麼呢，起名字的美國教授薩姆爾森被歐洲dealer羞辱啦，說你們沒有我們歐式思維是搞不懂期權噠。所以起名字的時候藉機復仇，把簡單的叫歐式，複雜的叫美式了。萌萌噠。

課件截圖

因為vanilla是口味最普通的冰淇凌

也有用vanilla來形容人就是沒什麼特點無趣的樣子

請原諒我複製粘貼=_=。看了下字典，原來還有 vanilla sex呀……

(Oxford English Dictionary)

vanilla, n. (and a.)

[From the popular perception of vanilla as the ordinary, bland flavour of ice-cream.] Plain, basic, conventional; (esp. of a computer, program, or other product) having no interesting or unusual feature; safe, unadventurous. Used orig. with reference to sexual activity (esp. in vanilla sex). Only occas. as pred. adj. colloq. (orig. U.S.).

1972 B. RODGERS Queens』 Vernacular 184 Vanilla bar, a gay bar that is not SM. Ibid. 205 Vanilla,..rigid, conforming, goody-goody 『This neighborhood is too vanilla for the licks of us.』

1983 G. L. STEELE et al. Hacker』s Dict. 129 It』s just a vanilla terminal; it doesn』t have any interesting features.

1985 W. DYNES Homolexis 123 S M adepts dismiss gays of simpler tastes as mere fluffs, who limit themselves to timid exercises in vanilla sex.

1988 InfoWorld 24 Oct. 60/2 In its unmodified, 『vanilla』 state Accountmate is an adequate, if unimpressive, system.

1989 Profession 89 60/1 The specious appropriation of selected fragments of a prestigious literary theory can even make a species of 『vanilla linguistics』..look enticingly 『postmodern』.

1992 Guardian 28 Nov. (Weekend section) 7/2 Since the late Seventies, the lesbian community has also suffered a painful schism between 『S M dykes』 and 『vanilla』 lesbians.

plain-vanilla adj. fig. (orig. U.S.) having no special or additional features; basic, ordinary; cf. VANILLA n.

1959 Washington Post 13 July A19/2 After Cocacabana, Bethany Beach will always look slightly *plain vanilla to me.

1975 Forbes (Nexis) 1 Oct. 72 E-Systems also does aircraft maintenance and overhaul—from what Dixon calls 『plain-vanilla repair work』 to keeping the Presidential air fleet working.

2000 Esquire May 54/1 A sensible mix of stocks, bonds, and money-market mutual funds, the most plain-vanilla kind of investment strategy.

1 March 1936, New York (NY) Times, 「Lexicon of the Soda Jerker: The Slang Employed Behind the Counter Has Now Been Recorded by Phrase Detectives」 by Helen Dallas, pg. X10:

PLAIN VANILLA是指結構最單純的最普遍的。。。。對應著就是最簡單的期權了

SWAP就是字面意思，交換么。別被大寫迷惑了，不是什麼幾個詞的組合

簡單的英美文化來由：

比如進了一家冰淇淋店，如果不想要巧克力草莓藍莓之類的口味各異的冰淇淋，就要最簡單的，那就是vanilla。在英美會發現最簡單的口味往往不是我們想像中的pure，而是vanilla。冰淇淋，酸奶，奶油蛋糕都如此。vanilla期權這個叫法只是借用了日常生活而已。