Why is it interesting to deal with Mīmāṃsā deontics?
Most deontic theories conflate two different approaches:
The Mīmāṃsā approach is interesting exactly because it separates the two. In other words, suppose we say that a person O(p) because p is good or because it is God’s will etc. In this case, you are using your ethical (and metaphysical) assumptions to ground the validity of your deontic statements. By contrast, Mīmāṃsā authors analyse deontic statements on their own. Just like they analyse the epistemic validity of statements independently of the authority of their authors, so they analysed the deontic validity of statements independently of a further background.
This does not mean that it is ethically good to bring to poverty all human beings. In fact, if you do that, you are surely transgressing the prohibitions to harm human beings and will get negative consequences (=negative karman) out of it, but you do not need ethical presuppositions to make sense of the Mīmāṃsā theory.
For some news on my newly approved project on deontic logic in Mīmāṃsā, please read its website, here.