koan2,
As prof said, do not let it keep you from dinner waiting for an answer.
Forget about objective or measurement. That is not accepted. The inconvenient thing is that you are a nay-sayer or some worthless skeptic if you have doubts it works. Then you try it yourself, and, if the result is not "blacker blacks, a little violin player started dancing in the room" or some other poetry, you are no good and your result is worthless. In short, there is no way you can be right, if you just do not say "burn-in and other activities are Heaven's gift".
By the way, if you have to look/listen too hard for something, it is probably not there. At least not to some meaningful extent.