To qualify as a medical specialist, one must usually graduate from a university, then complete approximately four years of medical school, followed by a residency of two to six years in one' s specialty. Finally, a physician who desires to become a recognized specialist must complete an evaluation program directed by a medical specialty board. Ttherefore, anyone who has qualified as a recognized medical specialist is competent to practice in his or her specialty.
No one incompetent to practice a particular specialty completes the evaluation program for that specialty is an assumption on which the argument depends.