"While it is true that many of the functions not provided by Backbone itself could be filled by third-party plugins, this also means that there are many choices to be made when creating an application, as many functions have several alternative plugins. For example, nested models can be provided by Backbone.DocumentModel, BackBone.NestedTypes, Backbone.Schema, Backbone-Nested, backbone-nestify, just to name a few. Deciding which one is the best for your project requires research, which in turn takes time - and one of the main purposes of framework is to save you time. "

"But if I replace the prototype property with a new object, a.__proto__ still references the original object. "

"Deferreds aren't Promise/A+ compliant, which makes them subtly different and less useful, so beware. jQuery"