The second mode of investigation relies on inference. Here we do not necessarily use our direct perception, but follow a process of inference to establish the truth of a particular object or phenomenon. Through engaging in this deductive process, if we conclude that what the Buddha said is accurate, we can accept it. However, if our inference produces a result that is not in accord with what the Buddha said then we are justified in dismissing that teaching. It is not necessary that we simply accept something just because the Buddha said it.
Depicted from "Buddhism in the 21st Century - Part 19" June, Sydney, Australia