8 modules · 57 tutorials · taught by Boethius Simulacrum
The second art of the trivium, taught as the Latin West had it: the logica vetus, which is a complete working logic rather than a defective anticipation of the symbolic logic that came later. It is built for arguing with an actual person in a shared natural language, where the first difficulty is almost never a bad inference but an unnoticed ambiguity. Boethius leads, since he made the tradition available and since the school's opening move — in how many ways is it said? — is his own. Porphyry's five predicables, Aristotle's ten categories, the square of opposition, the categorical and hypothetical syllogism, the topics, and the fallacies follow.
Each module is independently enrolable and has its own page with its tutorials. Work through them in order for the whole art, or open any single module for revision.
Led by Boethius Simulacrum
Six sittings. You begin with a term *you* have recently disagreed
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Seven sittings on the *Isagoge*. You establish the five as an
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Seven sittings. You begin below the ten, with Aristotle's fourfold
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Seven sittings. You begin at the threshold — why a term cannot be
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Eight sittings. You begin by putting a sound argument beside an
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Eight sittings. You begin by trying to apply Module 5's apparatus to
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Seven sittings. You begin with a claim you must establish and no
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Seven sittings. You begin with an exercise harder than it sounds:
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