Editing Yarrow algorithm (section)

==Name==
The name ''Yarrow'' alludes to the use of the [[Achillea millefolium|yarrow plant]] in the random generating process of [[I Ching divination]]. Since the [[Xia dynasty]] ({{circa|2070}} to {{circa|1600 BCE}}), Chinese have used yarrow stalks for divination. Fortunetellers divide a set of 50 yarrow stalks into piles and use [[modular arithmetic]] recursively to generate two bits of random information<ref>
{{cite web
 | url = https://www.schneier.com/cryptography/yarrow/qa.html
 | title = Questions & Answers about Yarrow
 | last1 = Schneier
 | first1 = Bruce
 | author-link1 = Bruce Schneier
 | website = Schneier on Security
 | access-date = 2016-02-15
 | quote = The fortuneteller would divide a set of 50 stalks into piles, then repeatedly use modular arithmetic to generate two random bits.
}}
</ref>
that have a non-[[Discrete uniform distribution|uniform distribution]].