2. In the state of nascent monoideism (one idea) it may be immediate and perfect.
3. In the state of passive polyideism (many thoughts) it may be either immediate or may take place after an interval of greater or lesser length.
4. In the state of active polyideism the conditions are complex and subject to further subdivisions, for:
(a) Transmission may be direct if the subject helps by voluntary self-absorption in a concentration of mind more or less monoideic; he lends himself to the action; he listens mentally; he seeks, sometimes he finds!
(b) It may be indirect, i.e. latent; this time also with some concurrence on the part of the subject. This seems more frequent.
(c) Finally, it may in exceptional instances be either mediate (delayed) or immediate, even without the subject's being advised beforehand of the action.
Here, then, are the probable conditions; also the state of the agent and percipient. Now what about the connecting links?
Here we come to the heart of the problem. I shall be as brief as possible, since we cannot pretend that the problem is yet solved. I merely offer a few suggestions, some original, others advanced before by writers on these subjects.[44]
In order to obtain a specific action we must employ a specific instrument: a telephone for a telephone; a brain for a brain.