 A fairly clear statement of what is at issue here is given in a number of places by Linda Zagzebski (e.g., 2003a; cf. DePaul 1993; Zagzebski 1996; Jones 1997; Swinburne 1999, 2000; Riggs 2002a; Kvanvig 2003; Sosa 2007: ch. 4; Carter &amp; Jarvis 2012). To begin with, Zagzebski argues that the reliability of the process by which something is produced does not automatically add value to that thing, and thus that it cannot be assumed that the reliability of the process by which a true belief is produced will add value to that true belief. In defense of this claim, she offers the analogy of a cup of coffee. She claims that a good cup of coffee which is produced by a reliable coffee machine—i.e., one that regularly produces good cups of coffee—is of no more value than an equally good cup of coffee that is produced by an unreliable coffee machine.