Originally Posted by
JPinAZ
I'd say this is true if only looking at their usage in application (thier own individual styles or preferences while fighting). But IMO, the system of WCK (core concepts/principles) is complete and has no reason to evolve regardless of someone's personal skill or preference in fighting. It will only devolve if you change it.
On a side note, curriculms can evolve to suit the needs, but that is another subject apart from the system itself or one's personal evolution of fighting skills/application of the art.