The Iron Wyrm Affair

… it is not required to possess a mentath’s faculties in order to Observe, and to reap the benefits of said observation. Indeed, many mentaths are singularly unconcerned with any event or thing outside their chosen field of study, while a rich treasure trove of wondrous variety unreels before their very noses. A mere observer skilled in the science of Deduction may surprise even a mentath, and has the added benefit of a great deal of practical knowledge and foresight ever at hand. The faculty of Observation lies within each man competent enough, and taught to, read; it may be strengthened with practice, and indeed grows ever stronger the more one exercizes it.

If Observation is the foundation all Deduction is built upon, then the quality of Decision is the mortar holding fast the stones. Tiny details may be important, but it is of greatest necessitude to decide which details bear weight and which are chaff. Perfect, unclouded decision upon details is the purview of the Divine, and man’s angelic faculties, wonderful as they are, are merely a wretched imitation. Even that wretchedness can be useful, much as the example of Vice’s ultimate end may serve to keep Virtue from the wide and easy path to Ruin.

Much as Time seeks to bring down every building, and Vice seeks to bring down every Virtue, the treacherous Assumption ever seeks to intrude a detail’s importance wrongly into Deduction. A proper Assumption may save a great deal of time and trouble, but an improper Assumption is a foul stinking beast, ever ready to founder the ship of Logic upon the rocks of Inaccuracy.

Fortunately, the weapons of Reason and Observation do much to overthrow the false faces of Assumption. The decision to carefully and thoroughly question each Assumption as if it is a criminal, or a fool who does not differentiate Fact from Fancy, will serve each person seeking to strengthen his habit of Deduction faithfully. As the organs of Reason and Observation strengthen, the art of quickly finding the correct details becomes natural.

We shall start with a series of Exercizes to strengthen the faculty of Observation any Reader assaying this humble work possesses. These Exercizes are to be done daily, upon waking and retiring, and at diverse points through the Reader’s daily work as opportunity permits …

— From the Preface, The Art and Science of Deduction, Mr Archibald Clare