Since "skepticism" properly refers to doubt rather than denial--nonbelief rather than belief--critics who take the negative rather than an agnostic position but still call themselves "skeptics" are actually pseudo-skeptics and have, I believed, gained a false advantage by usurping that label.
Since the true skeptic does not assert a claim, he has no burden to prove anything. He just goes on using the established theories of "conventional science" as usual. But if a critic asserts that there is evidence for disproof, that he has a negative hypothesis --saying, for instance, that a seeming psi result was actually due to an artifact-- he is making a claim and therefore also has to bear a burden of proof.
Toute ressemblance avec certaines personnes se revendiquant de la « zététique » est purement « fortuit »