Any third party, unbiased group or individual capable of reviewing the guy's pronouncements and correcting any errors would count as peer review. You could do it yourself if you took the time to think critically and not get bogged down in preconceptions and superstition. It's known as having an evidence filter in your brain and not allowing your mind to get cluttered with erroneous and contradictory information.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'