"Learning it from a book"

[Chabrendeki]

Originally Posted by victory_angel

But then when Splinter finds the book on ninjutsu he doesn’t exactly learn from it, but it helps jog the memory of a previous existence as Hamato Yoshi. And his sons also pick up these skills rather easily as well and maybe have hints such as maybe Mikey or someone off handedly mention having weird dreams or finding strange how they seemed to have mastered their skills so easily and how it feels like they’ve learned these skills before.

But IF so, that's something that had to be explored in the movie. And not just fart-jokes and explosions.

Both films were very lazy on portraying the characters and showing them interact. And the "learning-ninjutsu-from-the-book-solution" was very much the same lazy for me.