|Analogy: formal parallelism. Intends show that from a similar case, similar conclusions can be drawn.|
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Analogy/Duhem/Cartwright: It is a raw fact that some things sometimes behave like certain other things - that gives us indications- Explanation/Duhem: provides a scheme for these indications - Unification: is fictitious - it is intended to simplify the theory - E.g. Maxwell treated light and electricity as the same.
Analogy/RussellVsAnalogy: the principle "same cause, same effect" is futile - if the antecedent (the circumstances represents) is accurate enough, the same case will never happen again -> per fundamental laws.
How the laws of physics lie Oxford New York 1983