These yet, by their presumed and apparent equality, serve as well to reckon time by (though not to measure the parts of duration exactly) as if they could be proved to be exactly equal.
Hauek, hala ere, beren ustezko eta itxurazko berdintasunagatik, denbora kalkulatzeko berdinak direla frogatu ahal izan balute bezala balio dute, nahiz eta iraupenaren zatiak zehazki neurtzeko ez balio.