“ RapMetrics, for instance, is a fascinating project by a chemical-engineering student named Liban Ali Yusuf; it is both a rhyming dictionary and a source of more-provocative analytical projects. In one, Yusuf sifted through lyrics by white and black artists and generated a list of “white” words and “black” words. A few “black” words: Houston, mink, Impala. A few “white” words: rotting, nuggets, ninja (which: ugh). ”