If you have seen pictures of the stone, it is only around half as tall as a person, and there is a great deal of writing on it which from a distance appears very small and close together. Moreover, I am assuming that in order for the writing to have been preserved for as long as it was and not otherwise faded (and because part of it was in hieroglyphics), that the writing was likely created using a chisel type tool to physically carve the letters into the stone, although I imagine this had to be a very laborious and time-consuming process.

In any case, I am curious as to how so much writing could have been created using this method, and yet still be legible enough and free enough of errors that the Greek passage could be translated entirely. I would just think that if you were using a chisel to chisel something into stone, that there would be at least several mistakes from parts of the stone potentially chipping off or breaking, and that this might occur even if you were moderately skilled from having done it many times before since no one can predict what might happen during the process. The Greek letters also appear to be fairly neat when viewed close up, almost as neat as if they were written by hand, so I also don't know how that was achieved by any measure.