I think, the commonest. In the first place, people are apt to assume with regard to things, which really are very good indeed in senses (1) or (2), that they are scarcely any good at all, simply because they do not seem to be of much use—that is to say, to lead to further good effects; and similarly, with regard to things which really are very bad in senses (1) or (2), it is very commonly assumed that there cannot be much, if any, harm in them, simply because they do not seem to lead to further bad results. Nothing is commoner than to find people asking of a good thing: What use is it? and concluding that, if it is no use, it cannot be any good; or asking of a bad thing: What harm does it do? and concluding that if it does no harm, there cannot be any harm in it. Or, again, by a converse mistake, of things which really are very useful, but are not good at all in senses (1) and (2), it is very commonly assumed that they must be good in one or both of these two senses. Or again, of things, which really are very good in senses (1) and (2), it is assumed that, because they are good, they cannot possibly do harm. Or finally, of things,
