[SatvikBeri]

The point is-there are lucid dreaming devices that work, at least partially. Remee seems to be based on similar principles. In theory Remee is an improvement on those devices, addressing a lot of the common complains about existing lucid dreaming technology. But unless I'm missing something (which is why I asked) it seems really odd to claim that an invention that's supposedly an improvement on existing, (partially) functional devices is "snake oil."

So let me rephrase my question. Given that there are existing, functional devices, based on a similar mechanism, and Remee seems to be an improvement on those devices, why exactly does it qualify as snake oil? Which of my assumptions is wrong?