until you have sure proof of it, but on the other hand do not be put off from taking perfectly legitimate precautions. Remember that genuine mediums never object to tests if they understand what they are for and are sure of the sitters' own genuineness in applying them. Preserve your equanimity on all occasions, and do not argue with or flatly contradict a medium with whom you are working. Remember that if genuine all he says has some meaning even though you cannot understand it and in many cases cannot be expected to, since the subject matter may refer to his own mental processes of which you are not aware. Do not imagine that if you cannot understand how information comes to a medium "it must be spirits". Preserve the scientific attitude, and remember that scientific methods simply consist in:
(a) Collecting your facts.
(b) Classifying them.
(c) Forming a theory that describes them.
Make up your mind before you go whether you want the nearest approach to truth that you can get.