The dip is better understood as a “shroud of noise” … where it becomes increasingly impossible to give a strong probability to a population of 2 to the maximum estimates (whatever they are).
It’s like listening to a Beatles song that someone says includes cryptic lyrics that say “Paul is Dead”.
So we volunteer to analyze the music and the lyrics using sophisticated sonic analysis. However the process requires turning up the “gain” which unavoidably allows more and more “seemingly random static pulses” to become more frequent and louder.
Your conspiracy-minded friend is absolutely certain that the words “Paul is Dead” is in that song somewhere. And so we dutifully continue to drill down, increasing the “gain”… and systematically looking for any combination of lyrics and noise that sounds like “Paul is Dead”.
At last, we read the point in the analysis where not a single word can be distinguished… only individual noise impulses. And so it is at this point in the analysis (at the 500,000 decible sine wave, or any other acoustic buzz words that fit the circumstances), all the technicians raise their hands in frustration!
All of them say… okay, the analysis is complete, because we can no longer distinguish a single word, let alone a 3 word string. It is at this point where the conspiracy-minded friend says: “At last, that is where the phrase Paul is Dead can be found! Somewhere in that cacophony of a cloud. Thanks for helping to prove my case!”.
What the … ?
Nothing has been proven… except that nobody can say for sure that someone just may have muttered “Paul is Dead” to himself… when nobody else could hear him. This makes for a great story. But it hardly makes for important evidence.