How to make up one's mind
Li Zhang, Sven Ove Hansson · Logic Journal of IGPL · 2015
The operation of making up one's mind about a sentence ϕ is a belief change operation that takes the agent to a belief state in which either ϕ or ¬ϕ is believed. Apart from being practically important, this operation is technically interesting since the standard approach of intersecting a set of optimal outcomes is not workable. A construction based on descriptor revision is provided in which the operation can be modelled. This construction is axiomatically characterized with a set of plausible postulates, and additional postulates that correlate with properties of the construction are investigated.