This position is incredibly difficult to actually maintain, given that when _non_ parapsychologists (that is, people who don't presuppose the telepathy exists) reproduce the experiments, they consistently get contradictory results. Infact, its only when the believers in psi phenomena do these experiments that they discover positive results. Is this a problem with science as a whole, or is this a problem with parapsychologists?
its only when the believers in psi phenomena do these experiments that they discover positive results
Hmm? Isn't that what we expect if there are no psi phenomena?
[ETA: Ah, perhaps this was an argument against the premise that parapsychologists use exactly the same procedures as other scientists. But in other sciences, one suspects that researchers who believe in XYZ tend to find it more than those who don't...]
Indeed, that's precisely the point. When findings are unreplicable _despite identical procedure_ it's usually considered a disconfirmation of the results of the initial experiment. Maybe not of the phenomena, but of the experiment. And since pretty much _all_ psi experiments have been disconfirmed, this effectively (tho not technically) disconfirms the phenomena.