Well, it might have been better if you'd said this weeks ago when I was actually proving it, but anyway, I'll recap as best I can. The ability to conceptualize is definitively human. The makes possible exchange, and the creation of exchange-value in the natural bodies of objects. For any large-scale exchange to be possible, a common denominator, or value per se, must be introduced. This common denominator must be something that all the objects share in common, which is human labour-power. The definition of labour-power is much wider than usually assumed, and is in fact co-terminus with human life. Financial value is human life confronting us in alien form. Financial value must not be confused with price, exchange-value or money, which it usually is.
That's not a proof, that's mere assertion, but I do prove this, meticulously and laboriously, and meeting every single objection raised, in the first half of this thread.