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Re:Functional programming for Object Oriented programmers by xentronium on Thursday November 24, 2011 @01:35PM (#3275058)
I would recommend "Why functional programming matters"[1] paper to anyone struggling to understand the purpose of functional programming. It's only about 20 pages.

[1] http://web.mst.edu/~tauritzd/courses/cs347/whyfp.pdf

Re:Functional programming for Object Oriented programmers by Confusion on Friday November 25, 2011 @02:24AM (#3276492)
That paper is a surefire way to scare people and keep functional programming from those that could use it perfectly well. You, and many others, vastly overestimate how capable even highly educated programmers are in understanding the arguments made in such a technical text.