reconstructed image of the holy tripod at Delphi

source of uncertainty analog drift and technologies of demonstration

casio sk1

"At Athens in the time of the sophists there were a number of self-appointed experts on music theory giving lectures and demonstrations. They were called harmonikoi, a term which for Aristotle, at least, covered both those who calculated interval ratios mathematically and those who judged them by ear. Stratonicus, a virtuoso citharist and renowned wit, is named as the first to teach ta harmonika and to construct a 'diagram'. Others used instruments for demonstration purposes without being able to play them skillfully. Theophrastus, in his thumbnail sketch of the osequious man, represents him as owning a little sports-court that he lends out to philosophers, sophists, arms-instructors, and harmonikoi for their lectures" West, M. L. (1992). Ancient Greek music. London: Oxford University Press. Page 218.

phase shifter

katapuknosis assemblage