The "salt test" is a popular and older than I am story\method, but why the name drop of Henry Ford? So far as I can tell, the evidence tying it to him is non-ex

The "salt test" is a popular and older than I am story\method, but why the name drop of Henry Ford? So far as I can tell, the evidence tying it to him is non-existent, just like all the other people\groups you hear it tied to. Regardless, why not let the method stand on it's own, and give up on the name dropping? Bah, rumors...