Virtues are the minimum and the Greeks set the bar. Greatest number versus greatest happiness is a measure of the State. Individuals are more complicated; the cascading impulses predict behaviour irregardless of the "greater outcome".
Knowing your limits and the overall limits of humanity are part of the ongoing meta-discussion on and about human nature. Assuming we have several working models to identify limitations, we can then benchmark this baseline against the potential of 'where we could go.'