"The odds of a hit versus a miss do not increase over time. The periods of one's career with the most hits will also have the most misses. So maximizing quantity -- taking more swings at the bat -- is much higher payoff than trying to improve one's batting average."

Of all the conclusions, this one threw me off quite a bit. I realize Marc is going to be following this article up with a part 2, but I d be interested to see just how a "swing at the bat" is defined in the start-up context. If a swing is defined as one iteration, then seeing no "systematic developmental trends" in the "quality ratio" goes very much against the grain. I would argue that every iteration teaches us something that is quite applicable in the "general" sense to future iterations (for different products/services and across markets).

In any case, even if this conclusion is considered in a non-startup context, its still very bothersome. For example, if a "swing at the bat" is defined as one complete work, such as a Book or a Musical Piece, why arent there developmental trends in the quality ratio?