What is the point you&#x27;re arguing against?  I know perfectly well that conservation of angular momentum is a thing.  I know perfectly well that the intrinsic property that we call &#x27;spin&#x27; of an electron is really angular momentum.  I know that a spinning bucket also has real angular momentum.<p>So, I&#x27;m not sure what you&#x27;re trying to tell me.<p>The central point made by colordrops is that angular momentum in a macroscopic object is 100% (accurate to at least ten decimal places) due to synchronicity of linear momenta.