Is
there any actual linguistic data to support this?
•Nilo-Saharan is much more problematic than Niger-Congo because it is
older and more internally fragmented and because its languages remain much
less well documented
•However, it is possible to say that ‘bow’ and ‘arrow’ and ‘spear’ can
be reconstructed for proto-Niger-Congo and apparently not for
proto-Nilo-Saharan
•It would be pleasant to have ‘harpoon’ in proto-Nilo-Saharan but the
type of specialised vocabulary is not recorded