When dealing with human subjects, especially when they are in a situation of communication, the problem of subjectivity is very serious.
What if, in order that telepathic communication between two beings occur, we need very specific factors in the two persons in order to that type of communication to occur?
What if those factor are very rare to come by and that without very specific factor, telepathic communication cannot happen.
For example, and I postulate hypothetic ideas here, telepathic communication could only occur when:
The two person must be very in tune with the subtle feelings of the present moment. They both have to be in very similar state of mind.
Or
One of the two must need help and the other must have some information about how to help the other person.
or
they both need to feel love toward one another
or
the telepathic communication can only occur when the telepathic message is about a very important matter like personal problems, ect.
some people, when they feel they are under test, feel stress. What if telepathic communication can only occur when the two person are very calm, in a peaceful state of mind, totally in confidence with the other person.
I could postulate all sort of reason why the test is flawed, but that test prove in no way that telepathic communication is impossible.
...and you're not making that list, why?