A "tiff-bit" is a tiny fact with a big theory, like breaking up over an untucked shirt. We amplify objectively small events when they tap into deep-seated anxieties or "existential questions" about our worth, relationships, or capabilities.

The idea that you'll one day be free of problems is a fallacy. Problems are a constant feature of life, indicating that something needs your attention. You don't eliminate problems as you grow; you graduate to more complex and sophisticated ones, which is a sign of progress.

Human brains are wired for a world of scarcity and threats. In a modern world of abundance, this problem-solving mechanism doesn't shut off. It begins to identify and amplify abstract social problems, leading to phenomena like absurdly long social justice acronyms.

Suffering is created entirely within the mind as a representational state. It's a signal from one part of the mind to another to compel it to solve a problem. This system can malfunction, leading to chronic suffering when the signal fails to produce a resolution or when goals conflict.

Humans can endure immense suffering, misery, and ugliness, but find boredom intolerable. This powerful aversion is an underestimated catalyst for major historical events, social movements, and even revolutions, as people seek excitement and a sense of purpose over monotony.

Unprecedented global prosperity creates a vacuum of real adversity, leading people to invent anxieties and fixate on trivial problems. Lacking the perspective from genuine struggle, many complain about first-world issues while ignoring their immense privilege, leading to a state where things are 'so good, it's bad.'

For individuals whose basic physical needs are met and who are in good health, the vast majority of their suffering is not caused by external stimuli like sights or sounds. Instead, it originates from internal sources: either physical pain or, far more commonly, their own thoughts.

This concept, 'prevalence-induced concept change,' shows that as significant problems decrease, our brains don't experience fewer issues. Instead, we expand our definition of a 'problem' to include minor inconveniences, making neutral situations seem threatening. This explains why comfort can paradoxically increase perceived hardship.

In a 'solved world' with no real problems, humanity's solution to a crisis of purpose may be to invent artificial ones. By setting arbitrary goals with inefficient rules, like in the game of golf, we can enable activities that provide a sense of struggle and achievement.