Basecamp was already functioning fine on mobile browsers, but it required a lot of pinching, swiping, and zooming. CSS media queries would have let us craft a mobile layout for all kinds of devices with a limitless array of screen configurations. We’d be on the exact same codebase with all the same features – and new features would automatically be available on mobile when they launch as long as we remembered to test and optimize them.Nackdelar med att använda responsive design, här från Basecamp.
Only using responsive design for Basecamp mobile would have been like fitting a Prius body to a Hummer… under-the-hood it would have been all wrong.
Behind the speed: Basecamp mobile [37signals.com]