Stan, you are right about the exact language. However, OWD wanted a synopsis and I think this is a fair one for an English major.

As you have shown, even multiple hits, even as many as four, don't assure a broken target. Nor, does one hit assure a broken target. But, big butt, single hits can break a target. The research was for predicting probabilities of broken targets so patterns can be associated with scores and aiming error.

DDA