Writing on a computer is faster than writing sentences out on paper, and it also allows you to correct mistakes much easier than on paper. Hope this helped!
-TTL
The curse on the Lady of Shalott is that she has to stay in her tower weaving, and she is not allowed to ever look out of the window. She has a magic mirror in which she can see shadows of the world go by, but if she were to look outside she would fall into the trap of the curse.