greg kaye
Explorer
Well, we could certainly interpret, if a 19th-level cardiologist took a level in golfing, that they'd suddenly be able to compete at a high level.The same reason the ranger can suddenly sense dragons at level 3, or the barbarian gets better at crit hits at level 9. Because gaining new abilities is fun. Obviously, getting better at something makes you better at unrelated stuff. It's why all our cardiologists are so damn good at golf.
Same as we could say that a 19th-level fighter or barbarian might find a spell book and get to cast 4d10 firebolts.
(The type of people that might become cardiologists might similarly be able to gain skills in a variety of other things they invested themselves into).