(also known as: vacuous argument [form of])
Description: An argument or position is self-sealing if and only if no evidence can possibly be brought against it no matter what.
Wherever you go, there you are.
Explanation: You can’t argue against that position, and as a result, it is vacuous, or meaningless.
Tina: Does God really answer prayers?
Mary: Of course he does.
Tina: All the time? For everyone?
Mary: Of course not. Only when the prayers are in accordance with his will.
Explanation: We have the same vacuity problem, accept this one is less obvious and protected by “faith”. There is no possible way we can know “the will of God”, thus no way to argue against it. As a result, it is meaningless -- it is the equivalent of saying everything happens because it happens.
Exception: No exceptions when being used as an argument.
Tip: Realize that most superstitious beliefs are centered around self-sealing or vacuous arguments, that is why so many people refuse to let go of superstitious beliefs -- because they cannot be proven false.