Materials from the postwar period are completely different. Within a decade we had 100 years of tech develop. Also - compare a building from the 19th cent. To

Materials from the postwar period are completely different. Within a decade we had 100 years of tech develop. Also - compare a building from the 19th cent. To earlier 20th. Those same building you say are intricate are not nearly as much as just decades earlier. Carpenters had access to a lot of new tech starting in the late 1800’s.