Each framework is like a different religion. Some people believe in Design Thinking, others in Effectuation, and yet others in the Lean Startup. Each framework has its own community, and gatherings. This is important to know, because once you choose one framework, it is difficult to combine it with other frameworks.

Old wine in new bottles. It is actually three times the same theory, but just using new terms and concepts. Airports have bookshops and they have to sell books. So writing the same thing in different words improves book sales.

Each framework takes a different perspective on the entrepreneurial process. While the main question for design thinking is how to come up with more innovative ideas, effectuation takes the perspective of the entrepreneur and offers insights into how entrepreneurs deal with the potential costs of failure in the innovation process. The lean startup shares with design thinking the attention for the project, but goes beyond the creative process and applies this thinking to the development of an entire venture. So each perspective helps to find answers for different sub-questions of the innovation and entrepreneurship process.