Nonsense About Belief and Action

This from one David Roberts, quoted approvingly by Sullivan.

Perhaps you didn't realize that "behavior causes changes in belief and not vice-versa"?

Yeah, see, you didn't know that because it isn't true.

This kind of psychobabbly nonsense is, apparently, irresistible to people. There are probably a few grains of truth in it here and there--people do seem sometimes to adopt beliefs about their beliefs as hypotheses to explain their actions. Nothing really wrong with that. But anyone who thinks that belief change never results in altered actions/behavior has never seen someone who has suddenly come to believe that there's a snake near their foot...