by Frontera Blog Thinking in funnels is a mental model that breaks down your goals into different stages. So you can improve the conversion at each stage to achieve the best possible outcomes. We’ll start with a marketing story from the 1890s to understand how it was born. And finish with how to think in funnels. Let’s go. In 1898, Elias Elmo Lewis created a formula that changed marketing forever. He had an advertising agency. And he wrote newspaper ads for his clients — which was the main channel to reach potential customers before radio and TV. Like any advertiser, Lewis wanted to sell…