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Plot hole: The Death Note that Misa brings to L headquarters is supposed to be fake, but when Light touches it he can see the Shinigami Ryuk.
Suggested correction: Light saw Ryuk after he tried writing a name down in the piece of the notebook hidden in his watch. Since he touched that piece, it makes perfect sense he would see Ryuk as that piece was originally part of Ryuk's death note and wasn't swapped by L.
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Plot hole: If you don't have Jesus' DNA, only that of Mary Magdalene, how does it prove anything other than that Sophie is related to some lady? It would still not definitively prove Christ was married to her or that he was not divine.