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Re:A different way of looking at responsive design: Intentio... by cheald on Tuesday August 27, 2013 @02:31PM (#6285247)
1) User agents lie. Frequently.

2) A user agent doesn't encode any information about the actual metrics of the device.

Doing layout by user agent is basically a worst-case hellhole of browser-specific codebase fragmentation. There's a very good reason why best practices have been trending away from "test for vendor class" and towards "test for agent capabilities".

Re:A different way of looking at responsive design: Intentio... by benatkin on Tuesday August 27, 2013 @08:07PM (#6287194)
Well a sufficiently complex framework could deal with it, by making another trip to the server if it discovers the code being sent down the first time isn't good enough.