Burning in... (a question from a novice)

[lumiere]

Assuming that the speaker does change for the burning" period, what leads us to assume the process would stop at the optimum point? It seems reasonable to assume that such a constantly changing "organism" would continue to transform itself in unpredictible ways....pehaps to the point where a good speaker became a bad sounding speaker...it doesnt make much sense and it seems dubious that manufacturers would want to create such an animal or warranty it.

After I was born, I grew up for a while, and that stoped at some point (Not necessarily optimum ). Now I'm just getting older, like a pair of speakers. Everything changes. When you buy a new car, usually you wait 'til it has some miles before you take it on a long trip. Why would that be different with audio equipment?