Edge cases

The difference between a master and a novice is the level of knowledge about the exceptions – peculiarities not mentioned in the standard manuals. For example, in health care, the master doctor knows about the simple minor presentations in many disease states. These are simple to overlook and difficult to conjecture. The only way to get this knowledge is to practice for a long time so you can see the many different cases. To do it quickly, immerse yourself in the practice. And study backwards, focusing on edge cases first.