For example, although his theory was conceived as a strict deductive system based on three fundamental laws, he nowhere indicated precisely which of their several mathematical and verbal expressions he wished to be taken as the canonical form.
Halimbawa, bagama't ang kanyang teorya ay conceived bilang isang mahigpit na deduksyon sistema batay sa tatlong pangunahing mga batas, siya wala na ipinababatid ng kanilang mga tiyak na ilang matematiko sa salita at expression na nagnanais na siya ay dadalhin na ang makanoniko form.