...I wish I could answer my own question! :-)
While finishing up my breakfast coffee, I played a couple of games on the laptop. As usual, when my hands are busy but my mind not really APPLIED, a little free-flow of thought meandered through.... I noticed my eyes are a bit itchy but they're far from dry ... I thought of PJ's jump to conclusion that dry eyes meant less mucin, and therefore dry intestines as well as eyes ... that he called what he was eating "zero carb" because though he was eating green leafy vegetables they "don't count" because they're not contributing carbohydrates to the system (which is bullshit) so "zero carb is bad" for him and consequently for EVERYBODY....
Why do people do this? It happens in a LOT of areas, not just that of diet and nutrition, though the latter is VERY obvious to those of us who read from my blog list.
People constantly think "I succeeded doing XYZ so everyone should be able to succeed." It took me a LONG time to realize that this is nonsense. I find fatty meat satiating as well as self-limiting, so everyone should. It's hard for me to get rid of fat, so if I do well on a particular regimen, so should you.
People like to take credit for the good things that happen to them, and assume the poor results that other people might have are a result of poor application, judgement, and effort. They often don't realize that they've been lucky or privileged, and even when it's pointed out to them they refuse to acknowledge it. Further, they don't WANT to believe that others can do exactly the same things they did, and yet fail.
That LAST SENTENCE encapsulates my big question. Is it cognitive-dissonance in reverse? We want science to be consistent with our experience of the world, and when it doesn't match up we have to come to grips with the unpredictability and complicated nature of life?
...Maybe I just answered my own conundrum....