Experiment with variant models

experimenting with variant models may help you in finding a good fit.

In spite of these common sense rules, there are many ways to design the model and create the prototype for any given problem. You'll need to try more than one model to find the best fit for your problem, but don't think of these trials as wasted effort. The time that you spend in designing the model, even time spent "playing around" with it, is time well spent since that time will be saved later.

Consider symmetry offers an example where experimentation is a good idea.