[KyleGoetz]

Originally Posted by allhailhata

Because Japanese kanji　has different readings.
活人剣＝"Katsu　Nin　ken"　or "Katsu　Jin　ken"
Nin is Go-on for "人".Go-on - Wikipedia, the free encyclopedia
Jin is Kan-on for"人".Kan-on - Wikipedia, the free encyclopedia
Go-on readings are used particularly often in Buddhist terms.
活人剣 is originally from Kōan Kōan - Wikipedia, the free encyclopedia
Katsu　Nin　ken is correct phoneme from historical viewpoint.
But most of modern japanese,I think, pronounce 活人剣 as Katsu Jin ken at first sight and it is not wrong.

Dude, you just blew my mind.