Supporters and Underminers: Reply to Chandler

<span class="paragraphSection"><div class="boxTitle">Abstract</div>I argue that two of the standard axioms of the AGM theory of belief revision stand in the way of it serving as the basis for an adequate account of defeasible reasoning, because they respectively disallow the adoption of beliefs not logically entailed by those previously learned and the abandonment of those not contradicted by them.</span>

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