This fact exists, for it is such, because these newer methods and ideas apply more naturally, more simply and more directly to many of the conceptions of geometry, mechanics and mathematical physics, than those long accepted. Why then have these admitted advantages not led to a more universal adoption of these methods? The answer seems to be that the required change of ideas, of manner of thought and of notation, was too radical. It is well known that changes evolve slowly, and although to many, evolution is far too slow a process, the only way to proceed is to aid to the best of one's ability in bringing about the desired result.