"Richard Alexander" wrote

I think we should at least settle this question; Can
an hypothesis, theory, principle, claim or
statement be scientific if it is not testable?

It depends on how literal you are.

For example, we can determine the dimension of the sun
using certain scientific methods. We can test these
methods under controlled conditions here on earth, but
we can't fly out into space with a measuring tape and
"test" their accuracy against more...errr... "conventional"
means.