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But they not only have no definite idea of what good logic is, but they have a definite opiion that here is no such thing.
men who would never dream of taking up an experimental research,- only a little different in its nature from that to which they are accustomed, without the most through study of and training in the theory and practice of the new experiments, - take up entirely new problems of reasoning with a light and airy confidence that that is the one business in which special expertise is needless and can, in fact, only do harm.
Their notion is that science is evolved little by little.
That the way for a scientist to do it to study what other men's work has been building up and to ass another grain of sand to their heap, and so follow out the development of science if they think you cannot at all tell beforehand (what thought will prove groundless and what less