 While the main ideas behind abduction may seem simple enough, cashing out more precisely how exactly abduction works is a complex matter (see entry on  abduction).  Moreover, it is not clear that abductive arguments are always or even generally reliable and cogent. Humans seem to have a tendency to overshoot in their quest for causal explanations, and often look for simplicity where there is none to be found (Lombrozo 2007; but see Sober 2015 on the significance of parsimony in scientific reasoning). There are also a number of philosophical worries pertaining to the justification of abduction, especially in scientific contexts; one influential critique of abduction/inference to the best explanation is the one articulated by van Fraassen (Fraassen 1989). A frequent concern pertains to the connection between explanatory superiority and truth: are we entitled to conclude that the conclusion of an abductive argument is true solely on the basis of it being a good (or even the best) explanation for the phenomena in question? It seems that no amount of philosophical a priori theorizing will provide justification for the leap from explanatory superiority to truth. Instead, defenders of abduction tend to offer empirical arguments showing that abduction tends to be a reliable rule of inference. In this sense, abduction and induction are comparable: they are widely used, grounded in very basic human cognitive tendencies, but they give rise to a number of difficult philosophical problems.