But, what about the following story: Rabbi Meir went for an urgent matter, to intercalate the year, to Assya. There was no Megillah there, so he wrote it from memory and read it. Rabbi Meir was a different kind of human being. The complete Torah was always in front of his inner eye, so it is as if he wrote it by copying from a scroll. And yet, the Sages forbade writing from memory!? - in case of pressing need, it is allowed.
But what about tefillin and mezuzah that can be written from memory? This seems to contradict the rule? - Tefillin and mezuzah are known by heart by many. The scribe can write them, provided that he is certain.
Art: Jewish scribe. Jozef Israƫls