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1. The theory that everything that happens must happen; that you can't save one thing without destroying something else. Coming from the idea of a butterfly caught in a spider's web. You can't save the butterfly without killing the spider (through violence or starvation). (Also personified in the more popular saying, "Live and Let Die") 2. ... Also the name of a movie that portrays the previous definition. Er, I think. I haven't actually seen it. Is it any good? Excuse me if I don't hold my breath...
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