Business Simulations. PRAXIS MMT At Praxis MMT Corp., as part of our effort to train executives and talent who shape or will shape the business world, have developed the MMT Simulators and the MMT Method®, the best way to learn by doing within the world of business management. Our simulations and methods achieve a degree of realism that is unparalleled by any other simulations. What is more, the number of variables in play is sufficiently high that we can claim that those who use them attain an in-depth knowledge of business practices.