This paper will add to the discourse on analogical arguments by showing that they need not be deductively reconstructed in common contexts of persuasion. Analogical arguments have varying degrees of similarity, which helps us to understand their varying degrees of strength. Pace Shecaira it will be argued that this is a common and useful way of examining analogical arguments. It will be shown that deductive reconstruction does not adequately capture the needed degrees of strength. Let us start with two-wise similarity (...) claims. Subject S1 says that the disputed case C1 is similar to C2 and should be treated as x, just as C2 is. S2 says that C1 is similar to C3 and should be treated as y, just as C3 is. S1 may counter with a three-wise similarity claim: C1 is more similar to C2 than it is to C3, because…, so C1 should be treated as x. Think of lawyers in court. It will be shown that the evaluation of analogical arguments in these contexts turns in a central way on similarity, and that deductive reconstructions get in the way of a proper understanding of the preceding. (shrink)

This paper identifies a type of multi-source (case-based) reasoning and differentiates it from other types of analogical reasoning. Work in cognitive science on mental space mapping or conceptual blending is used to better understand this type of reasoning. The type of argument featured herein will be shown to be a kind of source-blended argument. While it possesses some similarities to traditionally conceived analogical arguments, there are important differences as well. The triple contract (a key development in the usury debates of (...) the fifteenth and sixteenth centuries) will be shown to make use of source-blended arguments. (shrink)

This paper presents the results of training an artificial neural network (ANN) to classify moral situations. The ANN produces a similarity space in the process of solving its classification problem. The state space is subjected to analysis that suggests that holistic approaches to interpreting its functioning are problematic. The idea of a contributory or pro tanto standard, as discussed in debates between moral particularists and generalists, is used to understand the structure of the similarity space generated by the ANN. A (...) spectrum of possibilities for reasons, from atomistic to holistic, is discussed. Reasons are understood as increasing in nonlocality as they move away from atomism. It is argued that contributory standards could be used to understand forms of nonlocality that need not go all the way to holism. It is also argued that contributory standards may help us to understand the kind of similarity at work in analogical reasoning and argument in ethics. Some objections to using state space approaches to similarity are dealt with, as are objections to using empirical and computational work in philosophy. (shrink)