but , I mean.  Um , just wondering really.
Mm - hmm.
Um , the sort of standard answer about this sort of thing is that if you 're trying to find  the right system in some sense , whether you 're trying by categories or  or parameters  um , and your goal is discrimination , then having choices based on discrimination as opposed to , um , unsupervised nearness of things , um , is actually better.
Hmm.