 Premise 1 is beyond reproach, given our previous definitions. Premise 2 is justified by the mode of hypothesis. Step 3 of the argument follows from premises 1 and 2. Premise 4 is also beyond reproach—the only remaining possible structure for an inferential chain to have is to contain basic justified beliefs, but there are none of those according to premise 2. Premise 5 is justified by appeal to the mode of infinite regression, and premise 6 is justified by appeal to the mode of circularity. Premise 7 might seem to be a truism, but we will have to take a closer look at it.