A useful and somewhat though-provoking test. But, it feels really frustrating not being able to argue back; especially when the test starts claiming logical conclusions regarding my beliefs and opinions based on technical definitions ("irrevocable proof", "justifiable", etc) that I disagree with. :-)
You don't have to get very technical to use the meaning of "irrevocable proof". Interpreting the definition to mean 'proof that cannot be refuted' is pretty straightforward, and not a technicality at all.
Something like "irrefutable proof" would be better.