In the modern Western philosophy metaphysics
is to be understood as a branch of philosophy which in turn have two sub-branches: A- Ontology
is the theory of existing and B- Epistemology
is the theory of knowledge.
The “metaphysical knowledge
” is an ambiguous term since there is no universally agreed definition of “knowledge
”. That is why we have epistemology or the theory of knowledge.
By definition “knowledge” ought to be a true belief with good reason
, whereas “other kinds of human knowledge” - I take it to be “other kinds of human belief” for the reason that, these beliefs or “so-called knowledge” have not been tested properly to prove that they are really true beliefs or so-called true knowledge and we have indeed good reason believing in them.
Remember that we may believe something for the wrong reason but it may turn out to be true - this is not considered to be “knowledge” in modern Western philosophy.