Plenty of people enjoy there instant and pod coffee and we take opportunity within forums such as ours to state that there is far better quality coffee to consume and by indulging in quality coffee develop an understanding and a palette to appreciate the finer browns. (Should we just bite our tongue then) So why doesn't that also apply to us as well, the more we taste different origins and different roast profiles we develop our taste buds. I taste salts ,sours and other concoctions to develop those little buggers in my mouth so I can learn to identify all those fine notes that exist, a refractometer can support this. Cupping is another method that is also very important to roasting but we don't dismiss that. Plenty of science out there to support the argument of TDS of 20% - 22% results in great flavour profiles. At no point have I said throw your taste buds away, most important tool I have, but also means I need to make sure they are operating properly. Ask a smoker to identify flavours, eat a curry and see how good your coffee is, so many factors to influence your palette. As I said before, in a commercial environment a refractometer has it's place both for the roaster and the barista/caf