While the claim that the dead sea scrolls are letter-for-letter is false, I have always understood the errors to be spelling errors or grammar. While it is not exact, none of the errors you speak of significantly change the content/meaning, which is amazingly remarkable for a document that old. If only 1/1000 characters are in error, 99.9% accuracy for a 3000+ old document to the present is by far the best error/time ratio of any document in existence.
While the claim that the dead sea scrolls are letter-for-letter is false, I have always understood the errors to be spelling errors or grammar. While it is not exact, none of the errors you speak of significantly change the content/meaning, which is amazingly remarkable for a document that old. If only 1/1000 characters are in error, 99.9% accuracy for a 3000+ old document to the present is by far the best error/time ratio of any document in existence.