I'll explain the saying. Wheat is practical information. Even lies can be wheat if they lead to more good than evil, or are a good approximation of truth. Chaff is uncreative and functionless data, information with no real use and serve to make people feel, to use a favorite expression of Trout's, "like something the cat drug in". I get disappointed in audiophiles when they claim subjective impressions is a complete substitute for objective data, in which case they have abandoned reason for their imagination, but this is somewhat forgivable because they are always under attack by irritating naysayers, naysayers who tend to do the exact opposite of what they preach. They say they want proof but they sabotage it at every turn, here's a friendly hint, you can't call people unscientific and try to cajole them into doing scientific experiments for you. The fact there's all this bad blood I wouldn't even trust tests by pro-cablers, and you naysayers have no one but yourselves to blame scaring off pro-cablers from contributing, not that many naysayers know how to appreciate contributions.