Many investors focus on the current size of a company's competitive advantage. A better indicator of future success is the direction of that moat—is it growing or shrinking? Focusing on the trajectory helps avoid value traps like Nokia in 2007, which had a wide but deteriorating moat.

Citing legendary investor Peter Lynch, Cramer warns that an exceptionally low price-to-earnings ratio is often a red flag, not a value play. The market is correctly pricing in a future collapse of earnings. He uses the example of Bethlehem Steel, which traded at 2x earnings just two years before going bankrupt.

Companies that grow via frequent acquisitions often exclude integration costs from adjusted metrics by labeling them "one-time" charges. This is misleading. For this business model, these are predictable, recurring operational expenses and should be treated as such by analysts calculating a company's true profitability.

With the S&P 500's Price-to-Earnings ratio near 28 (almost double the historic average) and the Shiller P/E near 40, the stock market is priced for perfection. These high valuation levels have historically only been seen right before major market corrections, suggesting a very thin safety net for investors.

Lifetime Value (LTV) is meaningless in isolation. The key metric for investors is the LTV to Customer Acquisition Cost (CAC) ratio. A ratio below 3:1 indicates you're overspending on growth. The 3:1 to 5:1 range is healthy, while anything over 5:1 is world-class and attracts premium valuations.

Escape the trap of chasing top-line revenue. Instead, make contribution margin (revenue minus COGS, ad spend, and discounts) your primary success metric. This provides a truer picture of business health and aligns the entire organization around profitable, sustainable growth rather than vanity metrics.

Financial models struggle to project sustained high growth rates (>30% YoY). Analysts naturally revert to the mean, causing them to undervalue companies that defy this and maintain high growth for years, creating an opportunity for investors who spot this persistence.

Use gross margin as a quick filter for a new business idea. A low margin often indicates a lack of differentiation or true value-add. If a customer won't pay a premium, it suggests they have alternatives and you're competing in a commoditized space, facing inevitable margin compression.

This provides a simple but powerful framework for venture investing. For companies in markets with demonstrably huge TAMs (e.g., AI coding), valuation is secondary to backing the winner. For markets with a more uncertain or constrained TAM (e.g., vertical SaaS), traditional valuation discipline and entry price matter significantly.