Anyone with a brain knows that you can't just tell a person a flat amount of calories to burn to lose a flat number of pounds. Weight
loss to calorie burn ratios depend on age
, gender, height, weight, body mass, hormones, activity level, and a huge list of other factors. It is unreasonable to tell anyone they should not use a product/program without any science to back it up. If you need your "proof," I suggest using a little site called "Google." Try looking it up.