In my opinion, out of the three points made by Vitruvius’ Triad, the most important would be firmitatis because being structurally sound is the paramount when it comes to buildings. Next would be utilitatis because I believe that form follows function in design. Some may argue that venustatis, or the art and beauty of a building would be more important but I think the beauty of architecture already lies within the utility of a building and decorations could take a close third.