Full Idea
Mathematics is the model for reasoning about necessary truths, but jurisprudence must be our model when we deliberate about contingencies.
Clarification
'Jurisprudence' studies the relationship between law and morality
Gist of Idea
Follow maths for necessary truths, and jurisprudence for contingent truths
Source
Ian Hacking (The Emergence of Probability [1975], Ch.10)
Book Reference
Hacking,Ian: 'The Emergence of Probability' [CUP 1975], p.86
A Reaction
Interesting. Certainly huge thinking, especially since the Romans, has gone into the law, and creating rules of evidence. Maybe all philosophers should study law and mathematics?