Antti Ilmanen contrasts two forecasting methods. Objective forecasts (e.g., using market yields) predict higher returns from low valuations. Subjective forecasts (from investor surveys) extrapolate recent performance, becoming most bullish precisely when objective measures signal the most caution, creating a dangerous conflict for investors.

Investment philosophy often aligns with psychological disposition. Growth investing demands an optimistic view of the future, betting on innovation and expansion. In contrast, value investing is inherently more pessimistic, focusing on buying assets below their current worth with the hope of mean reversion.

While institutional capital market assumptions align with objective, yield-based models, their actual portfolio actions can deviate. Many institutions, despite models suggesting caution on expensive US stocks, maintained market weight, benefiting from the prolonged bull market. This highlights a critical inconsistency between their stated process and real-world behavior.

To achieve above-average investment returns, one cannot simply follow the crowd. True alpha comes from contrarian thinking—making investments that conventional wisdom deems wrong. Rubenstein notes the primary barrier is psychological: overcoming the innate human desire to be liked and the fear of being told you're 'stupid' by your peers.

The most profitable periods for trend following occur when market trends extend far beyond what seems rational or fundamentally justified. The strategy is designed to stay disciplined as prices move to levels few can imagine, long after others have exited.

Michael Mauboussin argues the market is inherently long-term oriented. For major Dow Jones stocks, nearly 90% of their equity value is derived from expected cash flows beyond the next five years, debunking the common narrative of market short-sightedness and a focus on quarterly results.

The difficulty in going against conventional wisdom isn't just intellectual. According to David Rubenstein, it's rooted in the human desire to be liked and respected. People avoid contrarian bets because they don't want to be told they're "stupid" by their peers, making the psychological and social cost very high.

Investors often invent compelling secular narratives—like a permanent housing shortage or "Zoomers don't drink"—to justify recent price movements. In reality, these stories are frequently post-hoc rationalizations for normal cyclical fluctuations. The narrative typically follows the price, not the other way around, leading to flawed trend extrapolation.

BlackRock's CIO of Global Fixed Income argues that unlike equities, fixed income is about consistently getting paid back. The optimal strategy is broad diversification—tilting odds slightly in your favor and repeating it—rather than making concentrated, high-conviction "bravado" bets on specific market segments.