Speculative manias, like the AI boom, function like collective hallucinations. The overwhelming belief in future demand becomes self-fulfilling, attracting capital that builds tangible infrastructure (e.g., data centers, fiber optic cables) long before cash flows appear, often leaving lasting value even after the bubble bursts.

A surge in highly speculative assets may not indicate a strong economy. It can be a sign that people feel so far behind financially that they're placing huge bets, believing in an "only up" market out of desperation rather than confidence.

Bubbles are created when assets like startup equity are valued astronomically, creating immense perceived wealth. However, this "wealth" is not money until it's sold. A crash occurs when events force mass liquidation, revealing a scarcity of actual money to buy the assets.

Instead of one all-encompassing bubble, the market has experienced sequential manias where speculative fervor rotates between sectors (crypto, memes, precious metals). Each mania can crash individually without triggering a broad systemic reset, allowing overall market valuations to remain elevated for longer.

The NFT market's boom and bust mirrors the web 1.0 crash. Greed-fueled speculation has given way to a focus on genuine collecting. A small number of projects with real utility and community will survive and become the dominant players, much like Amazon and PayPal did post-2000.

A market enters a bubble when its price, in real terms, exceeds its long-term trend by two standard deviations. Historically, this signals a period of further gains, but these "in-bubble" profits are almost always given back in the subsequent crash, making it a predictable trap.

Unlike the 2008 crisis, which was concentrated in housing and banking, today's risk is an 'everything bubble.' A decade of cheap money has simultaneously inflated stocks, real estate, crypto, and even collectibles, meaning a collapse would be far broader and more contagious.

Financial history rhymes because the underlying driver—human nature—is constant. Core desires for wealth, recognition, and love, along with the fear of pain and envy of others' success, have remained unchanged for millennia. These emotions will continue to fuel bubbles and crashes, regardless of new technologies or financial instruments.

The most significant market bubbles, like railroads, the internet, and AI, are driven by genuinely transformative ideas. Their obvious, world-changing potential attracts massive investment, which inevitably gets overdone, leading to a bubble and subsequent crash, even for successful underlying technologies like Amazon.