Is conditioning really incompatible with holism?

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Wagner, Carl
preprint description
Jonathan Weisberg (British J. for the Phil. of Science 60(2009), 793-812) claims, that in an interesting class of cases, probability assessments constructed by strict or Jeffrey conditioning preclude subsequent revision by after-the-fact defeaters of the reasons supporting those assessments, and that conditioning is thus "inherently anti-holistic." His analysis founders, however, in applying Jeffrey conditioning to a partition for which an essential rigidity condition clearly fails. Applied to an appropriate partition, Jeffrey conditioning is amenable to revision by after-the-fact defeaters in precisely the way that Weisberg demands.