In short...
In short, mediums engage in such inexplicable acts that we are obliged to follow them into the invisible realm of the spirit in our attempt to find an answer. All we have mentioned has been proved by experiment and it constitutes a refutation of the claims of the materialists, for if the spirit were simply an effect of matter, a physicochemical property of the brain, it would be impossible to explain all these varied phenomena that have been verified experimentally.
We can escape the impasse to which materialist thought leads only when we admit the existence of a supramaterial force that creates such phenomena, for it is not conceivable that they should be the product of material factors. Although age is not an important consideration for those who establish communication with spirits, those who enter on this path generally choose mediums from among children to receive messages from spirits.
This removes the likelihood of trickery, deceit, and recourse to various contraptions, and thus puts an end to all possible objection. At the same time, experienced and specialized researchers also take part in the sessions where contact is established with spirits. Repeated and careful experiments are carried out in order to remove any lingering doubts, to clarify all ambiguity, and to dispel any notion of autosuggestion on the part of the participants.
Although we can accept the matter under discussion as an established reality, it is like many other truths and realities exploited by those whose trade is trickery and deceit; they demean and dishonor it. One cannot therefore either trust all who claim to be able to communicate with spirits, or reject them with inappropriate arguments; both courses would be contrary to logic.
It is a careful examination of the matter that will lead to a perception of the truth and the ability to distinguish the illusory from the real. Farid Wajdi, author of the Twentieth Century Encyclopedia , lists the names of a handful of European and American scientists from among the many thousands that have worked in this field, and cites the clear evidence provided by the objective experiments they carried out.
Many of them were skeptical or negative about the possibility of communicating with the spirits of the dead until it was proven to them; in fact they first entered the field with the intention of totally disproving its bases.