[jafaku]

Again, you don't understand design by contract. You just pass objects around and pray that they will work.

If you stayed a bit up to date, you would realize that Rails is pretty dated already. For instance, take a look at Symfony2. It easily beats Rails in every aspect possible. You probably won't be able to appreciate it though, since you don't know the first thing about design patterns. You just use whatever you thought was "cool", easy, and you stayed for the syntactic sugar, which you confuse with being well designed.