This is a nice collection of real stories and events that show how change, risk, incentives, and expectations play out in real life. How obvious improvements can take a long time to catch on, how incentives affect what people do, how even smart people can miss clear risks, and how even big achievements can feel normal once they happen.
Lots of interesting little lessons, give it a read. 
Some quote worthy sentences from the article:
One of the strongest forces in the world is the urge to keep doing things as you’ve always done them, because people don’t like to be told they’ve been doing things wrong.
Incentives drive everything, and most of us underestimate what we’d be willing to do if the incentives were right.
Irrational trends rarely follow rational timelines. Unsustainable things can last longer than you think
Every time you uncover a new talent you’re proud of, temper your thrill with the acceptance that other people who want to win as badly as you probably aren’t far behind.
Every goal you dream about has a downside that’s easy to overlook
There’s a powerful urge to think risk is something that happens to other people. Other people get unlucky, other people make dumb decisions, other people get swayed by the seduction of greed and fear. But you? Me? No, never us. False confidence makes the eventual reality all the more shocking.
Some are more susceptible to risk than others, but no one is exempt from being humbled.
PS:
I was thinking, if we could have a dedicated thread for sharing interesting quotes that we come across.