Rhythm of Life

Life on this earth seems to be calibrated in some mysterious way to the number seven. We as humans operate under the cadence of a seven-day week—a cycle of human activity that doesn’t even follow the cosmic timing of the stars, the sun, or the moon.

The number seven even governs the music world. Most people think there are eight notes in an octave, just as there are eight sides to an octagon. But no, an octave has only seven. Count them: do, re, me, fa, so, la, ti—and then we start over again with do. That eighth note, the octave, begins a new cycle of seven. There are as many notes in the scale as there are days in a week.
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