Its not enough to see 200 swords and own some books and think you know it all either.
Compare yourself to the likes of those in Japan that handle various numbers of swords daily, 200 swords is nothing. Even seeing many swords from a smith, its not them all.
Remember Paul B years ago saying just when you think you know something, you realise you know nothing. Sometimes something crops up that throws a spanner in the works, so to speak.
What i have come to realise, a good few years ago but finally sank in. There are so many oddballs out there that i now prefer to keep an open mind, and shut up.
Folks sometimes dwell on trivial matters over "hand made" pieces of history that often have no more history than what is in hand. In other words, assuming.