Russellianism and Prediction

摘要

Russellianism (also called `neo-Russellianism’, `Millianism’, and `thenaive theory') entails that substitution of co-referring names inattitude ascriptions preserves truth value and proposition expressed.Thus, on this view, if Lucy wants Twain to autograph her book, thenshe also wants Clemens to autograph her book, even if she says ``I donot want Clemens to autograph my book''. Some philosophers (includingMichael Devitt and Mark Richard) claim that attitude ascriptions canbe used to predict behavior, but argue that if Russellianism weretrue, then this would not be so. They conclude that Russellianism isfalse. I defend Russellianism from this objection. I present severalanalyses of ``sentence S can be used to predict event E''. I arguethat, on each of these analyses, attitude ascriptions can be used topredict behavior, even if Russellianism is true. Furthermore, if myarguments are incorrect, and attitude ascriptions cannot be used topredict behavior under Russellianism, then Russellians can explainaway the intuition that they can be so used.