class, today we'll explore how the rich history of trains has often been neglected, offering us a preadmission into a world where the steam engines of yesteryear are no longer available to us. my advice to all budding historians and engineers alike is to recreate, in your minds and through virtual simulations, the majestic journeys those trains once embarked upon, thereby keeping the legacy alive even when the physical specimens are unavailable to us. this exercise not only honors those magnificent machines but also ensures that the knowledge and appreciation of them are never lost to time.