  These two arguments appear, then, to give good reason to deny a self that might ground diachronic personal identity and serve as locus of control, given the assumption that there is no more to the person than the empirically given psychophysical elements. But it now becomes something of a puzzle how one is to explain diachronic personal identity and agency. To start with the latter, does the argument from control not suggest that control must be exercised by something other than the psychophysical elements? This was precisely the conclusion of the Sāṃkhya school of orthodox Indian philosophy. One of their arguments for the existence of a self was that it is possible to exercise control over all the empirically given constituents of the person; while they agree with the Buddha that a self is never observed, they take the phenomena of agency to be grounds for positing a self that transcends all possible experience.