Examples may be the sunrise, the tides, the seasons, or others that are "more accurate and reliable… This is precisely what clocks are: nothing more than a man-made physical continuum flowing, normalized as framework of reference and measure[…]" , p.56.
Precisamente son esto los relojes: no más que un continuun físico en devenir de factura humana, normalizado como cuadro de referencia y medida [...]" , p. 56.