Why do some artists continue innovating and broadening their horizons throughout their careers, while others stall out after a big hit or two, and spend their declining years living off the fumes of that momentary success? “Everyone can name artists who thrive beyond what is considered their prime: Bach, Rembrandt, Hitchcock, Stravinsky, Matisse painting from his wheelchair. But equally there are those who feel that at a certain point packing it in is the graceful thing to do.” The reasons behind such artistic progression may go deeper than one might imagine: in fact, it may have much to do with the way the human brain evolves over the course of a lifetime.