Scanning ancient documents can be anything but trivial, and frequently more involved than simply placing paper/ parchment/ vellum/ etc on a glass plate. They usually need to be handled very carefully with mesh gloves, not compressed or folded , and likely not exposed to overly bright light to avoid fading the ink. The USA founding documents, which are over 100 years newer by comparison, are encased in inert gas and hidden from bright lights for preservation.

Newton's written notes may have required even greater care, which one could possibly argue would constitute unique intellectual effort.