Today my research group in Groningen (with the illustrious online participation of Tony Booth, beaming in from the UK) held a seminar session where we discussed Fabienne Peter’s 2013 paper ‘The procedural epistemic value of deliberation’. It is a very interesting paper, which defends the view that deliberation has not only epistemic value (as opposed to ‘merely’ ethical, practical value), but also that it has procedural epistemic value (as the title suggests), as opposed to ‘merely’ instrumental value. I'll argue here that I agree with the thesis, but not for the reasons offered by Peter in her paper.
The paper begins with the following observation:
An important question one can ask about collective deliberation is whether it increases or decreases the accuracy of the beliefs of the participants. But this instrumental approach, which only looks at the outcome of deliberation, does not exhaustively account for the epistemic value that deliberation might have. (Peters 2013, 1253)
One way to spell out this idea is the following: suppose there were two knowledge-producing procedures with the exact same accuracy, i.e. which would produce the same amount of true beliefs and avoid the same amount of false beliefs. Moreover, procedure D involves deliberation, while procedure O relies entirely on an oracle, for example. If we can show that procedure D is superior to procedure O on purely epistemic grounds, then we can establish that deliberation has procedural epistemic value, rather than merely instrumental epistemic value (i.e. increase accuracy).