The document discusses key lessons learned in a design thinking class. It notes that (1) empathizing with people by understanding their needs is important for finding solutions to problems, (2) all ideas have value in the early creative process, and (3) failure is part of the process and should be embraced to help start again. The document also outlines the design thinking process of empathizing with users, ideating possible solutions, prototyping ideas, and reflecting on the process.