You know there was a time just before I started to study physical science when astronomers thought that systems such as we have here in the solar system required a rare triple collision of stars.
In Poland my audience is all women between 18 and 30. At U.S. conventions you have the fantasy and science fiction crowd. At Harvard you have an entirely different audience. It's so schizophrenic.
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The science of booby-trapping has taken a good deal of the fun out of following hot on the enemy's heels.