Reliable arguments are either deductive arguments, or they are inductive i -arguments. Therefore , i -arguments cannot be shown to be reliable. It should be clear enough that the argument is valid. It may not be clear, at this stage, why we should accept the premises are true. Here are some preliminary points that may help.
Reliable arguments are either deductive or non-deductive.
Therefore, premise 2 is acceptable to anyone who believes that induction can be reliability. For a deductive argument to be reliable, it must be deductively valid, and it must have true premises. To show that the conclusion of such an argument is true, the argument must be valid, and we must show that the premises are true. If the premises are reports of past experience, like all i -arguments have been reliable in the past, then we can know them to be true. The dilemma is that either we have premises that we know are true, in which case the argument is invalid, or we add a premise that we do not know to be true.