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/ In science it often happens that scientists say, 'You know that's a really  \
| good argument; my position is mistaken,' and then they actually change      |
| their minds and you never hear that old view from them again.  They really  |
| do it.  It doesn't happen as often as it should, because scientists are     |
| human and change is sometimes painful.  But it happens every day.  I cannot |
| recall the last time something like that happened in politics or religion.  |
\                 -- Carl Sagan, 1987 CSICOP keynote address                  /
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