tl;dr: we don't know how to lose weight Conclusion he comes to at the end (or silver lining) is contradicted by his very source, too: "how long you stick to it

tl;dr: we don't know how to lose weight Conclusion he comes to at the end (or silver lining) is contradicted by his very source, too: "how long you stick to it" clearly doesn't actually work if no matter which diet people did, they didn't stick to it.