Tony -

Sorry, I missed that! When I got curious about it, I scolled through the article quickly, looking for the pattern "\d+" with my eyes. A quick usability tip is to write out numerical facts in digits, not words, so people scanning the article for facts can find them more easily (http://www.useit.com/alertbox/writing-numbers.html).

600 words is a bit much to read, at this point in my life, it takes a month to get through a 200 page novel. But it does sound like these books could be good reference guides.

J.Ja