I totally like the concept of the carb curve but question the idea that the actual endpoints of the various sections are absolute. I believe that where you are on the curve largely depends on your activity level. If you're a sedentary menopausal woman, your "primal blueprint maintenance range" is very likely different from a 20-something male who is a triathlete.
The 151st gram of carbs is a running joke on my blog. There are too many black swans swimming around to justify this contention. I think there's quite a few right here at PH.
Whenever I see "effortless" coupled with weight loss I cringe. For most it requires some effort, even if that effort involves sticking to a low carb diet. Mark Sisson has authored too many scientifically inaccurate posts for my taste. Let the downvoting begin ;)
I've followed the "steady weight loss" curve of 50-100 off and on for 8 months. Since Sept, I've lost 5 inches off my waist so I'm pretty happy with the curve and I'm not sure how many I lost before that but it was more than 4" for sure.
In actual practice, my sweet spot is 60-80g. I don't know yet whether or not that will change as I get closer to my desired weight (at least 8-10 more inches off the waist) but there's been no change at all so far and I'm about halfway now.
EDIT: I forgot to mention that my carb intake has always been about 50% fruit and 50% vegetables. I don't subscribe to the fruit-phobia expressed by many on PH.
I've been following the general principles of the "Curve" and have lost over 50 pounds in the past three months...Eating moderately strict and limiting carb intake. My mom and sister have experienced the same results as well as coworkers that I know are following a carb restrictive diet. I agree that it seems to be a little "cut and dried" but the principles (in my experience) are sound and have delivered the results mentioned...As with everything else it's something that each person has to work through and experiment with on your own. Saying "it's a load of BS" isn't helpful or constructive and is an opinion that many on here (I'd suspect) and thousands on Mark's site would disagree with you on. Disagree if you want but respect the fact that countless people have had success with it and attack the weaknesses of the article (ie, it's cut and dried, people have to experiment on their own, it's different for everyone, etc.) if you like but don't discount the success people have had with it.
Just my thoughts...and testimonial...and opinion...
I would say its bout spot on in my case. Realistically if you are not eating crap good luck eating more than 150 grams of carb/day. Really should be hard to do, but unlike you I would go ahead and call my diet primal. It just is more well defined for how i eat.
Either way if I eat under 100 grams a day I can lose about 2lbs a week. A little more than that and weight loss stops. A lot more than that (which I can only reach that level by going off the reservation) and I could continue to gain. Following these past couple of months worth of holidays that mixed lots of food and booze I'm back to eating clean (50-100g carbs) which will have me dropping 5-8 lbs in a month and back to normal.