User blog comment:DYBAD/Character Sheet/@comment-5057022-20170222152623/@comment-4867780-20170228121952

Lawrence can only create based on perfectly accurate data, meaning he has to directly memorize it from the item or being itself. So he can't create based on others' imagination (too vague and incomplete), but he may be able to design extremely close approximations based on available data. Blueprints are a special case, as they do provide the schematic to build a construct but not the template of the materials involved, so Lawrence would need to memorize some samples of the materials beforehand or engineer an appropriate substitute.