Sammendrag
A formal result is proved which is used in Juhani Yli-Vakkuri’s ‘Epistemicism and Modality’ to argue that certain two-dimensional possible world models are inadequate for a language with operators for ‘necessarily’, ‘actually’, and ‘definitely’.
This is an Accepted Manuscript of an article published by Taylor & Francis in Canadian Journal of Philosophy on 13 Jun 2016, available online: http://www.tandfonline.com/10.1080/00455091.2016.1192447