Clueless and Twl, I have printed and read through the De Lima paper. Read through it a few times, in fact. You are right, there are actual measurement graphs in there, similar to the types I called for above, that would seem to demonstrate the phenomenon he advocates and that you are talking about.
The paper itself, while stipulating many worthwhile points that I could agree with, did not impress me overall. It had a few inconsistencies that made me question De Lima's rigorousness. I listed these on a piece of paper so I could post about them, but I couldn't get those graphs out of my head. I was reasonably sure that my arguments above were sound, yet here was some empirical evidence to the contrary staring me in the face.
This bothered me all night, and I did not go to sleep, instead turning it over in my head. Finally in the wee hours I quit and decided to take a shower. I should have known - I always do my best thinking (and sometimes songwriting) in the shower. :-)
There I had an epiphany, and I now believe that I can debunk De Lima's paper (or at least seriously call it into question), graphs included. I am not going to post my analysis and critique right now, both because it needs to be a detailed post and I am tired and want to go to sleep, and because I want a little more time to recheck myself in the light of day and make sure I'm not mistaken or being rash - not only because I could always be wrong - but also because if I am right, what I say might carry a bit of reputational consequences.
In the meantime, I encourage anybody reading to use Clueless' link to the article, and consider these questions for themselves. What I am thinking of is not so advanced or anything, and it's quite possible (if I am correct in my assessment) that someone with more technical knowledge than myself would see the flaw I believe I have found in a much quicker time than I did. I will give this hint: the fatal problem area of his argument as I see it (one which I have already generally suggested in my posts above) is given away by a careful logical analysis of what is contained and implied in his graphs and their associated explanatory paragraphs (further hint: you must focus on what he doesn't say as well as what he does). I shall return.