 However, the relevant statistical information may also be more vaguely given, as in the premise, “Most people living in Chelsea are rich.” (There is much discussion about whether the conclusion of an inductive argument can be stated in purely qualitative terms or whether it should be a quantitative one—for instance, that it holds with a probability of .96 that Louise speaks both Dutch and French—or whether it can sometimes be stated in qualitative terms—for instance, if the probability that it is true is high enough—and sometimes not. On these and other issues related to induction, see Kyburg 1990 (Ch. 4). It should also be mentioned that Harman (1965) conceives induction as a special type of abduction. See also Weintraub 2013 for discussion.)