Great article! (it surprised me that I read the whole article in one shot without evening noticing it was that long!) One question (maybe a bit sensitive): all

Great article! (it surprised me that I read the whole article in one shot without evening noticing it was that long!) One question (maybe a bit sensitive): all the glory of successful YC startups aside, what are the "failure rate" for YC funded startups? What situation would you consider a "total fail", if that ever happened? And another related question is based on which criterion would you consider a YC graduate successful? user base? the amount of money raise? financially break even? profitability? thanks.