The most important aspect of Vitruvius’ Triad is Firmitatis, or stability. This is the most important because a structure must stand and be solid in order to serve any function. The second most important aspect of the triad is Venustatis, or beauty. I think this is second because a well designed space can serve any function, but a space must be welcoming to function. While Utilitatis and Venustatis are closely connected, I believe the beauty/feeling of the space is more important.