Perhaps you should check these links out on what makes an
expert, the answer, is surprise surprise, EXPERIENCE & PRACTICE.
Many accounts of the development of expertise emphasise that it comes about though long periods of deliberate practice. In many domains of expertise estimates of 10 years experience or 10,000 hours
Source: Wikipedia
or
Erricson
I guess the ultimate test is who would you have operate on your testicles, the master or the apprentice? Nuff said.