Published in Learning & Leading with Technology, vol. 30, no. 9, Summer 2003.

The Times They Are A-Changin'. – Bob Dylan

The times, they are a-changin'. Gaia's day, month, and year, they are a-changin'. Fortunately and thankfully, the second seems to be constant, and is wonderfully well-measured to an abundance of significant digits – it is the foundation of time measurement. – Laran Stardrake

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