• ** Considerthe cubes, {1, 8, 27, 64, 125, . . . }. Their first differences {7, 19, 37, 61, . . . } might at first seem to lack an obvious pattern, but taking the second differences {12, 18, 24, . . . } takes you down to the simply related level. Taking the third differences {6, 6, . . . } brings us to the perfectly stable level, where chaos dissolves into order.
    ♡ recommended by @Renha

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