 So we now have to move to an informed desire version of the comprehensive theory (Sobel 1994). According to the informed desire account, the best life is the one I would desire if I were fully informed about all the (non-evaluative) facts. But now consider a case made famous by John Rawls (1971: 432; see Stace 1944: 238): the grass-counter. Imagine a brilliant Harvard mathematician, fully informed about the options available to her, who develops an overriding desire to count the blades of grass on the lawns of Harvard. Like the experience machine, this case is another example of philosophical ‘bedrock’.  Some will believe that, if she really is informed, and not suffering from some neurosis, then the life of grass-counting will be the best for her.