“For the purposes of this book we’ll define scientific thinking as a process of deliberately engaging reality with the intent of learning. At the core of scientific thinking is continuous curiosity about a world we will never fully understand, but we want to take the next step to understand a little better. It is a continuous comparison between what we predict will happen next, seeing what actually happens, and adjusting our understanding and actions based on what we learn from the difference.” 

Toyota Kata Practice Guide by Mike Rother (McGraw Hill, 2018) p. 13.