 Opponents of the theory may seek acquaintance with such relations or entities without finding it, or at least, without realizing that it is acquaintance that they have found. While acquaintance theorists are likely to take phenomenological considerations seriously, they may plausibly argue, first, that it is far from obvious that we are not acquainted with such entities as those just mentioned (indeed, many have found it difficult to deny that we can sometimes, in very simple cases at least, just “see” the entailment relation between propositions), and second, that the fact that other philosophers disagree about this does not raise a problem specific to the acquaintance theory. Moreover, the significant theoretical advantages gained may more than compensate for any lack of phenomenological obviousness. 