"He has his own definition of metaphysical. For example, forensics is metaphysical and criminal trials are metaphysical exercises."
And whatever you do, do not, I repeat, DO NOT! engage in abstract thought, because that too, alas, is metaphysical. Abstract thought is the enemy. Stick with pure observations, which as every epistemologist knows involves no interpretation or abstractions for the mind to understand.
That is the road to knowledge. Or was that ignorance? Who knows! That's an abstract concern.
:)
Let's not forget those champions of metaphysicality, medical doctors, who evidence-interpret all the way to the bank.