Try the ideas with your hands
Proofs you can step through, ratios you can hear, a cross-examination you can run on your own beliefs, and instruments in the browser. Each lab is part of one or more of the seven arts.
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Grammar · Logic · Rhetoric · Arithmetic · Geometry · Astronomy
Logic & Proof
Definitions, Euclid's postulates, fifteen propositions proved step by step, Plato's Divided Line and a Socratic cross-examination you can run on your own beliefs.
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Music
The Science of Sound
Where number becomes something you can hear: pure and tempered intervals, beats, the Pythagorean comma, the harmonic series and the physics of strings.
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Lab
Music & Guitar
Guitar practised like an experiment: one string, then two, then the whole neck, a 30-minute daily ritual, and working instruments: tuner, metronome, drone, fretboard and monochord.
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Lab
The Canon
Sixty-seven sentences worth knowing, from the Presocratics to the present, each cited to its source and graded for how reliable the attribution is.
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