For decades, marketers have embraced the concept of a “consideration set”—a supposedly stable group of brands that consumers weigh before making a purchase. This idea aligns neatly with the traditional marketing funnel: awareness leads to consideration, which leads to purchase. It’s a tidy, linear model, and like many tidy models, it fails to reflect reality. The problem? There is no single consideration set. This article is part of Branding Strategy Insider’s newsletter.