Except in very narrow cases where there's breakthrough science that needs patent production worrying about competitors is a waste of time. If you can't out iterate someone who is trying to copy you you're toast anyway.
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.