Koi's Law.. People do changed or progressed depending on one's ability or environment.. Or let say how they get influenced or mentored.. As i watched the last episode of K-drama Doctor Romantic.. Based on medical struggles,back-biting and greediness.. But you will learned a thing or two with the Lead Actor Dr.Kim. And how he really changed everyone's perpective.. They compared it to a Koi...which is a kind of carp, grows small or big depending on the environment, People's abilities change proportionally to the environment they were exposed to..