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| | washingtonpost.com: Second Thoughts |
 | | Sure, you might think that the moment you're in, at this very moment, is the true, correct, unassailable, authentic now, but for gosh sakes you thought the same thing 10 minutes ago and will think the same thing in 10 minutes. |
 | | Einstein, a clerk in a Swiss patent office, had been conducting thought experiments, trying to imagine, for example, what a beam of light would look like if you were riding on an adjacent beam. |
 | | In his paper, he made a counterintuitive leap: The speed of light is a constant, regardless of the motion of its source. |
| www.washingtonpost.com /ac2/wp-dyn/A48182-2004Mar10?language=printer (2197 words) |
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