That the first recorded book printing was in the late 800s? This was on a block press and was almost 600 years before Gutenberg’s famous movable type printing press.
These days, things are very different. Graphic design is done on computers, transferred to plates, and printed on huge rolls of paper instead of individual sheets. Yet in th more than a thousand years since that first book was printed, the message of salvation has not changed.
That is one thing no one can improve. His plan is perfect.