I hear you, but I think it's a mistake to take things like "browser detection is bad" as inviolable axioms. These sorts of best practices are results-oriented,

I hear you, but I think it's a mistake to take things like "browser detection is bad" as inviolable axioms. These sorts of best practices are results-oriented, so when we want different results, we have to reevaluate them. I am not necessarily saying browser sniffing is now an awesome idea, though.