That particular example, though, is a strong one. McArdle wrote: "Warren and her co-authors defined anyone with $1000 worth of medical bills as having a medical bankruptcy". In fact, the paper used multiple criteria, one of which was $1000 in uncovered medical bills. This is not a pedantic difference, so far as I can see; there's a big difference between having $1000 in bills, some of which is covered, and $1000 in bills, none of which is covered.