> Backbone by itself is not sufficient for building complex web apps. What he meant was that for any complex web apps built on backbone.js, you have to build

> Backbone by itself is not sufficient for building complex web apps. What he meant was that for any complex web apps built on backbone.js, you have to build a layer on top of it or use additional plugins. You won't build complex applications as is. IMHO, I consider backbone.js more as a base framework which you need to enhance before starting your project. So, in a way, every complex backbone.js app is more of a <Complete new framework> extending Backbone.js. A proof of that is mostly the number of available plugins (which is great!!). As a matter of fact, ender could be written on top of backbone.