Baseball is a sport of decisions -- some small and routine, becoming the building blocks of the game; others so huge they dictate the future of franchises. Law offers an era-spanning dissection of some of the best and worst decisions in modern baseball. He explains what motivated them, what can be learned from them, and how their legacy has shaped the game, and he explores the essential question: What were they thinking?

The case for robot umpires: How anchoring bias influence strike zones and everything else -- Never judge an iceberg by its tip: How availability bias shapes the way commentators talk about sports -- Winning despite your best efforts: Outcome bias and why winning can be the most misleading stat of all -- But this is how we've always done it: Why groupthink alone doesn't make baseball myths true -- For every Clayton Kershaw there are ten Kasey Kikers: Base-rate neglect and why it's still a bad idea to draft high school pitchers in the first round -- History is written by the survivors: pitch count bingo and why "Nolan Ryan" isn't a counterargument -- Cold water on hot streaks: Recency bias and the danger of using just the latest data to predict the future -- Grady Little's long eighth-inning walk: Status quo and why doing nothing is the easiest bad call -- Tomorrow, this will be someone else's problem: How moral hazard distorts decision-making for GMs, college coaches, and more -- Pete Rose's Lionel Hutz defense: The principal-agent problem and how misaligned incentives shape bad baseball decisions -- Throwing good money after bad: The sunk cost fallacy and why teams don't "eat" money -- The happy fun ball: Optimism bias and the problem of seeing what we want to see -- Good decisions: Baseball executives talk about their thought processes behind smart trades and signings.