> Tagging is implicitly an OR operation. Doesn't have to be. I can't think of many tag-based search systems that default to OR; usually the default is AND, and

> Tagging is implicitly an OR operation. Doesn't have to be. I can't think of many tag-based search systems that default to OR; usually the default is AND, and that's pretty sensible. There are plenty of text-based search systems that default to OR, though (see also: pretty much every mainstream search engine), and it makes searching a fucking nightmare, so I definitely get the aversion.