You're making a lot of assumptions that are unfounded. What you're suggesting is usually called progressive enhancement. Yeah it's great, but sadly when you ar

You're making a lot of assumptions that are unfounded. What you're suggesting is usually called progressive enhancement. Yeah it's great, but sadly when you are using a system like Spine, Backbone or Ember, it's not just a matter of "endless Firebug sessions" to resolve the initial bootstrap problem. No one claims that this is not possible, nor is anyone "crying foul". On the contrary I know first hand how much of this work was done at Twitter and how difficult it is. But as you stand by your petulant claim that "twitter.com is slow because twitter is incompetent or doesn't care about their product." I stand by mine, that there are tradeoffs when embracing one style of development over another. Feel free to disagree with me but back it up with experience, not false assumptions, blanket statements and the denigration of many good people.