Actually, I would understand cave drawings better than cuneiform writing, so I disagree on the level of universality involved in each. (edit) Just to give you

Actually, I would understand cave drawings better than cuneiform writing, so I disagree on the level of universality involved in each. (edit) Just to give you a sample of each: http://en.wikipedia.org/wiki/Cuneiform#mediaviewer/File:Cyrus_cylinder_extract.png http://en.wikipedia.org/wiki/Cuneiform#mediaviewer/File:Cyru... http://www.pellegrino.de/wp-content/uploads/2013/04/26-cave-paintings1.jpg http://www.pellegrino.de/wp-content/uploads/2013/04/26-cave-...