The concept of second-order consequences refers to the unforeseen effects of a decision or action that may only become apparent after some time has passed. In product strategy, understanding these consequences is crucial to avoid launching a product that may ultimately harm the company. This is because second-order consequences can lead to a cascade of unintended effects, ultimately affecting the product's market position and the company's overall performance. The idea is that every decision has a ripple effect, and ignoring these consequences can lead to significant problems down the line. For instance, a company may launch a product with a feature that, while initially popular, eventually leads to a significant increase in customer support requests, thereby increasing costs and decreasing customer satisfaction.

A real example of this is the case of the McDonald's Arch Deluxe, a burger aimed at a more adult demographic. The product was launched with significant marketing fanfare, but ultimately failed to gain traction. One of the second-order consequences of the Arch Deluxe's launch was the cannibalization of sales from other McDonald's products, as the new burger drew sales away from existing menu items. This is an example of how a product launch can have unforeseen effects on a company's existing product lineup.

Understanding second-order consequences requires considering the potential long-term effects of a decision, rather than just focusing on short-term gains. This involves thinking critically about how a product launch may affect the company's overall strategy and market position, as well as considering the potential risks and unintended effects. By taking a more holistic approach to product strategy, companies can better anticipate and mitigate the risks associated with second-order consequences.