To determine if a startup will succeed, analyze the sequence of events. Did organic customer demand and behavior exist before the startup created its supply (product, messaging)? If the startup is trying to force motion with its supply, it's a sign of conjuring demand and a higher risk of failure.

When a company is growing 10x or 50x year-over-year, obsessing over the entry multiple is a mistake. An initially 'insane' valuation can look cheap in retrospect. The primary focus should be on determining if the company is on an exponential curve; price is the least important factor in that equation.

While a strong business model is necessary, it doesn't generate outsized returns. The key to successful growth investing is identifying a Total Addressable Market (TAM) that consensus views as small but which you believe will be massive. This contrarian take on market size is where the real alpha is found.

The static size of a Total Addressable Market (TAM) is a misleading metric for big ideas. A better evaluation framework focuses on two questions: Will the product's innovation cause the existing TAM to grow multiple times over? Can the company layer on additional, new TAMs over its lifetime?

Before concluding a company can sustain extraordinary growth, consult historical data ('base rates') on how many similar companies succeeded in the past. This 'outside view,' a concept from investor Michael Mauboussin, provides a crucial reality check against overly optimistic forecasts.

Early-stage investors shouldn't be deterred by a small current market size. The key is assessing the potential for rapid growth and future scale. Many massive companies emerged from markets that initially appeared small, proving that market creation and expansion are critical variables.

The narrative of "0 to $100M in a year" often reflects a startup's dependence on a larger, fast-growing customer (like an AI foundation model company) rather than intrinsic product superiority. This growth is a market anomaly, similar to COVID testing labs, and can vanish as quickly as it appeared when competition normalizes prices and demand shifts.

Before scaling a service business like chandelier cleaning, the founder was advised to quantify the opportunity. This means building a spreadsheet to model the total addressable market: number of homes/hotels, likely frequency of service, and cost per service. This data-driven approach determines if the market is large enough to support growth.

The classic seed strategy of investing in a founder in a small market and hoping they "stair-step" into a larger Total Addressable Market (TAM) is no longer viable. With entry valuations at $60M+, investors must believe the opportunity is already massive enough to justify a $20B+ outcome to make the math work.