Control of the formation of suggestion is necessarily _indirect_, not direct; imperfect, not perfect. Just because all discovery, all apprehension involving thought of the new, goes from the known, the present, to the unknown and absent, no rules can be stated that will guarantee correct inference. Just what is suggested to a person in a given situation depends upon his native constitution (his originality, his genius), temperament, the prevalent direction of his interests, his early environment, the general tenor of his past experiences, his special training, the things that have recently occupied him continuously or vividly, and so on; to some extent even upon an accidental conjunction of present circumstances. These matters, so far as they lie in the past or in external conditions, clearly escape regulation. A suggestion simply does or does not occur; this or that suggestion just happens, occurs, springs up. If, however, prior experience and training have developed an attitude of patience in a condition of doubt, a capacity for suspended judgment, and a liking for inquiry, _indirect_ control of the course of suggestions is possible. The individual may return upon, revise, restate, enlarge, and analyze _the facts out of which suggestion springs_. Inductive methods, in the technical sense, all have to do with regulating the conditions under which _observation, memory, and the acceptance of the testimony of others_ (_the operations supplying the raw data_) proceed. [Sidenote: Method of indirect regulation] Given the facts _A B C D_ on one side and certain individual habits on the other, suggestion occurs automatically. But if the facts _A B C D_ are carefully looked into and thereby resolved into the facts _A´ B´´ R S_, a suggestion will automatically present itself different from that called up by the facts in their first form. To inventory the facts, to describe exactly and minutely their respective traits, to magnify artificially those that are obscure and feeble, to reduce artificially those that are so conspicuous and glaring as to be distracting,--these are ways of modifying the facts that exercise suggestive force, and thereby indirectly guiding the formation of suggested inferences. [Sidenote: Illustration from diagnosis]