I worked at Prime Computer (a minicomputer company) in Detroit when I was 19. Ford was converting their car design program, PDGS (Product Design Graphic System

I worked at Prime Computer (a minicomputer company) in Detroit when I was 19. Ford was converting their car design program, PDGS (Product Design Graphic System) to Prime. It ran on 16-bit 32K CDC computers. The program was huge and used overlays to swap different features in and out from disk as the user clicked on menu options on a vector display. For the young tikes here, a vector display is like a traffic control display: it draws perfectly straight lines, perfect circles, by moving an electron beam over a continuous phosphor-coated screen. No pixels. By contrast, the Prime minis had a Multics architecture with virtual memory (no overlay swapping!), something like 8MB of memory, a 32MB disk drive (16MB fixed, 16MB removable cartridge) and could support 2 vector displays on 1 computer. Happy days! So yeah, for us oldsters (I'm 58), modern software often seems very bloated.