I think it's appropriate that we've got two definitions today; the CvC definition of a Schwerpunkt (a bit fuzzy becasue it varies between books) that's about the location of greatest might and the U.S. definition of a "Center of Gravity" (center with -er!) or "CoG" that's more a kind of weak spot lever analysis.

It's too late to force the world to accept the original one as the only one because the weak spot analysis needs a title as well - but it's not too late to deny people the right to assert that their differing concept goes back to CvC and his Schwerpunkt.