How do machines move when subjected to forces? Or what forces should we apply to a machine in order to make it behave as desired? In many of our study programs, courses in mechanics and dynamics teach students how answer such questions based on the physics of Newton’s laws of motion. In this lecture, you will participate in an experiment that is about importance of math in engineering. Mechanical engineer Jurnan Schilder will deliver his worst ever lecture on machine dynamics, in which the majority of the math is omitted. Based on how little you learn in this lecture, Jurnan explains the didactical advantages of starting each problem in machine dynamics with the relevant math. At the end of this lecture, you will have an increased appreciation of the power of math over the physical laws required to solve problems in machine design. And just maybe, you learn something on machine dynamics along the way.