If we extrapolate the Dr example:

There is the one doctor who learned one way to do the operation at school, with specific instruments, sutures etc. and uses that for 1000 surgeries.

And then there's the curious one who actively goes to conferences, reads publications and learns new better ways to do the same operation with invisible sutures that don't leave a scar or tools that are allow for more efficient operations, cutting down the time required for the patient to be under anaesthesia.

Which one would you hire for your hospital for the next 25 years?