Looks good! Thanks for writing.
… found a typo: "The first 90% of the product took the first 90% of our time […]" Should be 90%-10%. … and isn't that the 80/20 rule? (http://en.m.wikipedia.org/wiki/Pareto_principle)
… found a typo: "The first 90% of the product took the first 90% of our time […]" Should be 90%-10%. … and isn't that the 80/20 rule? (http://en.m.wikipedia.org/wiki/Pareto_principle)