Many different roles contribute to building software: product owners, business specialists, testers. Yet knowledge of programming keeps these roles at a distance. In this talk, we will discuss a new powerful way of removing this distance for the benefit of our teams: mob programming. We’ll walk through my lessons: the pains of joining a mob as a non-programmer, and the gains of what a tester brings into a mob. This talk serves as an inspiration to learning together, immersed in the experience of creating software as we’re learning. Diversity of thoughts and skillsets improved everybody and created a better product.