Roberta Ballarin will present her paper, “The Barcan Formula and the Varieties of Actualism.”
Abstract: Since its original introduction, the Barcan Formula (BF) has been the subject of much controversy. Despite some intuitive objections from the actualist camp, BF has been recently defended both on logical and metaphysical grounds as compatible with actualism. In this paper, I consider two recent actualist defenses of BF, and argue against both of them. In so doing, I distinguish between different forms of actualism.