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Speculation is perfectly all right, but if you stay there you've only founded a superstition. If you test it, you've started a science. - Hal Clement Speculation is perfectly all right, but if you stay there you've only founded a superstition. If you test it, you've started a science. - Hal Clement Speculation is perfectly all right, but if you stay there you've only founded a superstition. If you test it, you've started a science. - Hal Clement