Ah, testimony and anecdote. Pretty hard to prove, can be disproved under the right conditions.
Example homeopathy: Very hard to prove, very easy to disprove.
Example a "vision": Very hard to give independent proof as only limited people had the vision, can be hard to disprove as you didn't see the vision.
Example a "medical miracle": The event happened so it may be easy to believe. The pre and post evidence may be brought into question and therefore the miracles believability.
Example homeopathy: Very hard to prove, very easy to disprove.
Example a "vision": Very hard to give independent proof as only limited people had the vision, can be hard to disprove as you didn't see the vision.
Example a "medical miracle": The event happened so it may be easy to believe. The pre and post evidence may be brought into question and therefore the miracles believability.
I don't have an anger problem, I have an idiot problem.