So if it’s neither from experience, nor from any scientifical proof, what is your reason in believing it at all?
Science, as we know it, has been only around for a couple hundred of years. It started with Copernicus, Galileo etc. Before that time, “science” was philosophy and religious teaching, based on religious scripture. It is not science by today’s definition. If we moved some of our modern scientists a thousand years back in time, they would be charged with witchcraft and burnt on fire. And science is not an “art” as you call it. It is simply reasoned thinking, rational perception of the world, based on proven theories and laws of physics etc., which has the task of explaining how the Universe works. It is not an art.
Correct me on this if I’m wrong, but there have been testing attempts on this. There were created a couple of websites for this purpose, to connect people together for the purpose of proving the existence of this kind of dreams. None of them have succeeded as of yet, despite pursuing this goal for 10 years or more.
Testing “within dreams”? What do you actually mean by that? If, what you have in mind, is proof from personal experience, you should understand, that it is not a sufficient proof. Shared dreaming won’t be proven if a pair of dreamers wake up and declare that they’ve just had a shared dream. It needs to be confirmed by using external devices. In my opinion, a simple method can be used, in fact, the same one that was used to prove the existence of LD’s. The subjects can communicate “in a shared dream” by using eye movements, where one of them moves his/her eyes, and the other one repeats the movement he just saw. Eye movements are recorded by external devices, and, if the pattern matches, we have a practical proof of the existence of shared dreams. Despite the simplicity of this method, we have not yet received any evidence on this.
The first variable is easy to accomplish, since the longest REM phase may last for an hour. It gives a lot of room for a simultaneus REM phase.
Regarding the second variable, if the subjects are natural LD’ers, or LD’ers, who have mastered their techniques, it will be easy. As far as I’m aware, many people on this forum can induce LD’s at will. This isn’t the problem.
The third one isn’t even a variable. I wouldn’t find it hard to think of a “meeting spot”, provided I’m lucid. S. LaBerge faced nearly the same variables. He also had to make sure that his patients were able to LD. It wasn’t a problem for him.
That’s why it should be done in a laboratory, not at two different parts of the world. Trying to organise such tests with the help of a website just complicates the matter further. Especially, as you mentioned, it allows cheating. Therefore, the evidence may be falsified and should not be taken seriously.
If you ever acquire proof for this, it would be great. However, since we have analysed the human brain thoroughly, the chance that we might have missed something as important as a telephatic device is simply too small.