This chapter is concerned with two kinds of scientific negligence. The first is what we just encountered: unforced errors that are introduced to scientific analyses by inattention, oversight or carelessness. The second kind is when scientists, who should know better, bake errors into the very way their studies are designed. This latter kind of mistake could be due to poor training, apathy, forgetfulness or, much as it seems cruel to say, sheer incompetence.
