"... the notions category and functor were not formulated or put in print until the idea of a natural transformation was also at hand."

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I think that people have been claiming hip-hop as being dead since the moment it started. I think there are people - and I can be included in that category sometimes - that get frustrated feeling like maybe the industry has handcuffed itself, or trained its artists to do or think about music in a way that classically hasn't led to the greatest records in hip-hop.

— El-P