“Evolution is ruthless and unforgiving—it doesn’t teach by showing you what works but by destroying what doesn’t. One takeaway is that you should never be surprised when something that dominates one era dies off in the next. It’s one of the most common stories in history. Few companies, products, musicians, cities, or authors remain relevant for more than a few decades, tops. The ones that have (the Beatles, Levi’s, Snickers, New York City) are rare exceptions.”