I could see that if the servant was writing the book, but he is just making an exact copy of what he sees. Monks (the real European types) used to do the same thing, even if they couldn't read. They had no idea what the 'scribbles' meant, they just made sure to make the page look just like the other one.The unseen servant is mindless. It can continually repeat the same basic motions, but
doesn't have the ability to adapt. I think that changing what words are written would
require a new command. On the other hand, I would allow a mage to sit there and
direct an unseen servant through copying a book. Unfortunately, this doesn't save the
mage any time.
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