It is a stubborn fact that even if we based our caloric intake on some body massequation, or had mandated thermostat settings, it would still not solve the problem of scarcity.
He signed the letter to Franklin Roosevelt warning that it may be possible to build an atom bomb, and the letters of his famed equation relating energy to mass hover in our minds when we picture the resulting mushroom cloud.
By combining data from the two steps an equation linking mechanical power (dependent on mass) to electrical power (calculated by multiplying voltage by current) can be derived.