"Perfection is Stagnation
The only way Perfection could remain accurate and faithful to the largely accepted definition of it, is if the criteria for said theoretical plateau were constantly in a state of Flux.
In which case, if Perfection were to be "added to" and "subtracted from" in perfect synch with the ever-changing prerequisites, it stands to reason that only then would said Stagnation refrain from being a fitting descriptor.
Which, in turn, would coin another favorite of phrases ::
"The Only Constant Is Change."