Hey Andy, I'm new to the forum, and this is an old thread, but just a point to add to your analysis:
In other words, a really overweight person might be consuming 4000 calories per day.
You're right that they might be, but they needn't necessarily
be. I'm such a really overweight person -- 300lbs and 5'8", BMI in the mid 40's -- but I have gained that weight over all of my adult life. In fact, I have the data to show that my *daily average* excess over the past 30 years or so, is a mere 50. Of course it could be that I have a zero excess for long periods and then binge on the sort of 3K-4K amounts you mention. All I can say is, I don't. I certainly have managed occasionally to stuff more than 3K down my face in a single day, on a day like Thanksgiving or Christmas for example. But so have all my other male friends, some of whom are as thin as rakes.
...just the act of not eating for a 2 hour window, twice a day, will lead to weight loss.
I think that's a very good point. I wondered about the same thing here: http://boards.sethroberts.net/index.php?topic=8403.msg107055#msg107055
The impact on consumption of waiting a little is *definitely* non zero, but there's not remotely enough good data to say that's all
that's going on for the morbidly obese on SLD. (That said, there's not remotely enough good data about SLD in the first place, so whatchagonna do?
FWIW, I started SLD last week, and so far I've lost roughly a pound/day. Mere correlation, or positive causation? Dunno yet, too early to say.