Tuesday, February 16, 2010
If you change the size of the planet, or its distance from the sun, you change everything. The day lasts longer, the year lasts longer, things fall farther in the space of one second and so on.
If you would change the length of the year, how would you judge the rising of stars – if it mattered. It does happen that the prediction of floods, and the creation of the calendar, enabled the existence of widespread agriculture and the feeding of thousands, and later millions of people. The predictability of earth’s environment, from the snows to the stars, profoundly allowed the existence of all civilization ... through the measurement of mere points of light popping up above the horizon.
No matter what.