Is it possible to classify them in terms of demonstrable value to humanity viz.

1/ Useless ie., no education or qualifications being suitable only for menial, manual work requiring little or no thought processes. (This group would include cRappers and Baakabawlas)
2/ Useful (possibly) having limited ability to perform certain works (albeit under human supervision) which humans can do but shouldn't have to, eg., Janitor, Bell hop, Car wash attendant etc.
3/ Useful in that they have (somehow) obtained formal qualifications in any of the 'Hard' sciences, eg., Science, Medicine or engineering as opposed to 'Humanities/Afreakan-American 'studies' etc.
OR are they simply NIGGERS no matter what?