Barry Rolz is the author of 'How Not to Invest: The Ideas, Numbers, and Behaviors That Destroy Wealth and How to Avoid Them' and is a wealth manager with three decades of experience as a trader, strategist, and financial advisor.

Bitcoin's price volatility and historical losses (e.g., people losing access to passwords) make the 'bought 15 years ago' returns chart misleading because the actual experience of individual holders includes catastrophic losses that aggregate returns obscure.

European regulatory frameworks are more aggressive than US frameworks in restricting algorithmic profiling and targeted advertising, suggesting different approaches to protecting consumer privacy from technology companies' data exploitation.

Survivorship bias caused decades of incorrect belief that average mutual funds outperformed the market—academic research in the early 1990s revealed that excluding failed funds showed most survivors were substantially underperforming, meaning the base rate of failure was high but invisible.

Money does not serve as an effective store of value over time because it should always be in motion, invested in real estate, business, bonds, or other income-generating assets rather than sitting idle, as dormant capital loses purchasing power to inflation.

Equity index ownership is a bet on human ingenuity and innovation generally, while individual stock ownership is a bet on specific company management, technology, and competitive position—only broad indices have historically survived across centuries.

Money market funds in low-return environments (like the past 5 years of low rates) can still beat inflation and serve as effective short-term holdings for capital earmarked for specific purposes.

Young adults carry greater stress from career and income uncertainty than from market volatility, and this career-stage risk dominates financial decision-making in early years more than portfolio losses, making financial security less about asset values and more about employment security.

Algorithmic social media is engineered to maximize engagement through outrage and anger, tracking user behavior, browsing habits, preferences, and credit scores to tailor advertisements specifically for manipulation.

Warren Buffett and Charlie Munger's success came not from being smarter than everyone else but from being 'less stupid' through greater emotional and behavioral control, and IQ above 125 is wasted without behavioral discipline.

Money is not the path to happiness, and accumulating beyond a threshold sufficient for security and freedom produces no additional happiness gains.

Money is not a store of value; it is a medium of exchange whose greatest purpose is to free you from activities you don't want to do and allow you to focus your effort, time, and energy on what you want.

Keynes's 'money illusion'—the human tendency to think in nominal rather than real terms—is fundamentally a problem of being stuck in the past, since all our models of the world are formed from historical experiences and our brains process information with a 200-millisecond delay.

Paul Graham's insight that 'experts are experts on an earlier version of the world' is brilliant because it explains both expert overconfidence and expert obsolescence—their models work until the world changes, and they're often last to recognize change.

People's experience of past events anchors their expectations for future events more strongly than current fundamentals do, making historical trauma (poverty, scarcity) predictive of future behavior (hoarding money) even when circumstances change dramatically (becoming wealthy).

Individual emotional relationship with money is shaped by the specific historical period and economic class during which a person grew up, creating vastly different attitudes toward saving, spending, and risk across siblings who experienced different economic conditions in the same family.

Even very old companies like 600-year-old English breweries or 1000-year-old Japanese sushi restaurants are exceptions that prove the rule—the vast majority of companies fail, mature, or underperform, making their survival data points rather than investment templates.

Housing bubble psychology showed consumers anchored to past prices, unable to fathom price declines even though fundamental credit conditions had changed, illustrating denominator blindness and failure to update mental models when regimes shift.

Lack of agency—being subject to the whims of others and unable to control one's work or decisions—is psychologically debilitating and a major driver of career dissatisfaction, often worse than actual financial constraint.

As people age and accumulate wealth, they become less emotionally affected by short-term market crashes because they have experienced previous cycles, understand that markets are cyclical, and possess greater financial security, making them rationally capable of holding through volatility even when exposure to risk is highest.