"Probably not. But what data is this you refer to? No textile chemist knows exactly what it is that the buyer tests when he feels a tuft of cotton. Presumably there’s the average length of the threads, their feel, the extent and nature of their slickness, the way they hang together, and so on. —Several dozen items, subconsciously weighed, out of years of experience. But the quantitative nature of these tests is not known; maybe even the very nature of some of them is not known. So we have nothing to feed the Machine. Nor can the buyers explain their own judgment. They can only say, ‘Well, look at it. Can’t you tell it’s class-such-and-such?’"