"
Geeks like us are always tempted to implement very complex, never-ending features because they’re academically or algorithmically interesting, or because they can add massive value if done well, such as speech or handwriting recognition, recommendation engines, or natural-language processing.
These features — often very easy for people but very hard for computers — often produce mediocre-at-best results, are never truly finished, and usually require massive time investments to achieve incremental progress with diminishing returns.
"— http://www.randsinrepose.com/archives/2011/01/25/interview_marco_arment.html
