great choice. I think that trying to burn image on wood without drawing it first with a pencil would much harder. And burning tool even looks a bit similar a fat pencil...so without pen/ pencil I would probably not be able to create anything at all. And a lot of entertainment would also be lost as well. No books, no movie scripts, texts of songs(assuming that without pen/pencil we would also not have keyboards)...The world would be kinda boring and sad place. Also aliens would have even more reason to laugh at us:
after all this time those primitives can't even write/ draw.