Suppose that you've nally made your model as simple as possible. At this point your model is probably too simple to be of much interest: it's likely just an example or a special case. But if you have made your model as simple as possible, it will now be much easier to see how to generalize it since you know what the key pieces are that make the model work. Here is where your education can be helpful. At last you can use all those techniques you learned in graduate school. Most of the time you were a student you probably stud- ied various canonical models: things.
