複選題4 (AB) This has prompted some researchers to argue that the future lies not in collecting more evidence for telepathy, but in probing possible mechanisms. (AC). The idea was that a person acting as a 'sender' would attempt to beam the image over to the 'receiver' relaxing in the sealed room. (AD) The limitations of the studies have undermined the reliability of their findings, and, thus, invite more doubt. (AE) Skeptics and advocates alike do concur on one issue, however, that the most impressive evidence so far has come from the so-called 'ganzfeld' experiments, a German term for 'whole field'. (BC) These ranged from 'sensory leakage' - where clues about the pictures accidentally reach the receiver - to outright fraud. (BD)Defenders of telepathy point out that demanding impressive evidence from every study ignores one basic statistical fact: it takes large samples to detect small effects.