the definition of Copy and Mastering are way different.
the manga showed that kakashi copied 1000 jutsu and he can use any of it in any time don't talk about imaginary ideas(he forgot it)
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I believe everyone is misunderstanding the OP. He hasn't implied that Kakashi has forgotten their use, he is alluding to their mastery, which Kakashi has never shown or implied. Take Sasuke's example, he copied Lee's speed but it took him a some time to gain mastery over it and the ensuing ability Chidori. This proves that copying does give you the ability to use an ability, but it doesn't, by default, put you in a master's seat.
Kishi said he COPIED. Not MASTERED. The definitions of those 2 words are completely different.
Copying =/= Mastering
It's just like taking a test. You can copy the person next to you, but does that mean you mastered that subject? No
When he copies with Sharingan, he uses it once. It doesn't mean he remembers it forever. Think about it. How many hand signs did he have to copy from Zabuza to execute Water Wave. There were like a hundred handsigns.
Orochimaru has mastered many techniques in 50 years, but people say Kakashi mastered 1000 in 30? lol
Can you back with evidence that he doesn't? Kishi said he does so he does until said otherwise.
Think about it. How many hand signs did he have to copy from Zabuza to execute Water Wave. There were like a hundred handsigns.
No one can memorize instantly. They would actually have to practice it.
People read way to much into this. Even if he knew 1000 jutsu he wont use them
Kishi said he COPIED. Not MASTERED. The definitions of those 2 words are completely different.
Copying =/= Mastering
It's just like taking a test. You can copy the person next to you, but does that mean you mastered that subject? No
When he copies with Sharingan, he uses it once. It doesn't mean he remembers it forever. Think about it. How many hand signs did he have to copy from Zabuza to execute Water Wave. There were like a hundred handsigns.
Orochimaru has mastered many techniques in 50 years, but people say Kakashi mastered 1000 in 30? lol