Writing advice is not the product of an equation. "If you do X, then Y will occur" is false in this instance. "If you name a character John Q. Hymenbreaker, your book will be an instant bestseller" is crazy-talk. Writing advice is not about providing certifiable answers. It is about making suggestions.
Nothing in the next-door world of Dachau impinged on the great winter cycle of Beethoven chamber music played in Munich. No canvases came off museum walls as the butchers strolled reverently past, guide-books in hand.