The team at Double Fine kindly filmed a video covering the reasons behind their choice of Moai and showing some of the very earliest Double Fine Adventure development prototypes.

Rails controllers violate the Single Responsibility Principle. Each “action” has a different responsibility and should be contained in a separate object.

An object essentially wraps up method dispatch and state

When a message is sent to a Smalltalk-80 object, the method dictionaries associated with that object's class and its superclasses are searched at runtime. If none of these classes implement a method for a given message, the Smalltalk virtual machine sends the object the message doesNotUnderstand:. The original message selector and message arguments are bundled together in a Message object and passed as the argument to doesNotUnderstand:. The default method for this message is stored in class Object. This method invokes the Smalltalk debugger, since sending an object a message it does not implement is usually a sign of programmer error. However, objects that override doesNotUnderstand: can intercept unimplemented message at runtime, and process them as they see fit.

Denial that the expression problem exists is a common symptom of overzealous functional or object-oriented dogmatism.

Unlike most MVC-style configurations, Passive View results in no dependencies between view and model.