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lgarron
on Aug 5, 2011
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How I explained MapReduce to my Wife?
Why wouldn't you be able to get the average? Return page count + total pages for each shelf and then take the ratio of "reduced" sums.
michael_dorfman
on Aug 5, 2011
[–]
Re-read the comment. It discusses exactly what you are proposing.
lgarron
on Aug 7, 2011
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Oh, I see. I was struck by the direct phrasing of "You couldn't take the average number of pages", which made me parse the rest of the comment incorrectly.
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