I too find information theory a fascinating subject. Several commentors are disappointed by the trivial nature of the study (which I assume none of us have read

I too find information theory a fascinating subject. Several commentors are disappointed by the trivial nature of the study (which I assume none of us have read). That is a problem with trying to apply theory to real world problems, You often have to make compromises in the quality of your interpretation of the problem in order to rigorously apply the tools of theory. I'm guessing the researches picked up some understanding of ASL during their research (if they didn't have some to begin with), but chose to frame their study so the parameters were easier to quantify.