@Swname - Sorry but I have to disagree.
It is flawed in the fact that it ignores the fundamentals of thermodynamics and science.
Telling someone that they have can 'free' foods such as pasta, potatoes etc and not include it in their daily input calculations is ignoring the basics of how the human body works.
A calorie controlled eating plan is what we should all work towards, however, in doing so, one needs to understand that EVERY item of food (even if it has deemed to be free of calories by SW) has a calorific value.
To lose weight, you need to use more energy than is put in. This could be via exercise (so you can eat more calories than your BMR) or consuming more than your BMR.
To state otherwise, is not an opinion, it is scientifically and factually incorrect.
The next level of what % of fats, proteins and carbs to have, time restricted eating, fasting etc is one that could be debated and different people respond differently. This is up for debate on its effectiveness.
However, following a model that ignores fact and science is in fool hardy.
PS. Do not get me started on the meals
A 'Free' Slimming world curry has 385 calories in it, yet in essence one could consume this and not take into consideration the KJ's?