A model of intention with (un)conditional commitments

This paper proposes a model of intention with conditional/ unconditional commitments based on Cohen and Levesque's (C&L's for short) framework of intention. We first examine C&L's framework with a well-known philosophical puzzle, the Toxin Puzzle, and point out its insufficiency in modelling conditional and unconditional commitments. We then propose a model theory of a specific modal logic with modalities representing the typical mental attributes as well as action feasibility and realisibility. Instead of defining intention as a persistent goal, we define an intention as a conditional/unconditional commitment made for achieving a goal that is believed to be achievable. Finally we check our framework with the Toxin Puzzle and show our solution to the puzzle.