Ethos,
I'm not sure what, 'The truth about the truth' is, but as I indicated in another thread, I think the transfusion medicine taboo is the single biggest thing wrong with the JW faith.
The teaching sprang from a misconception about what blood actually does in the body and this is very, very clear in the late 40's, early 50's literature. Subsequent argumentation has all been flawed in one way or another, relying on false analogies, grammatical misconstructions and assertions about what the Law requires that are downright false.
You have asserted in another thread that blood nourishes the body, but you were not clear if this was simply a reference to instrumentality or if you were making a claim about the nature of blood itself.
I would still like to hear you flesh that out a bit and explain why you accept the teaching, if in fact you do. I'll be more than happy to elaborate on any of the assertions I have made above.