Charles Babbage's Analytic Engine was never fully designed because he had to keep tinkering with the Difference Engine (a more limited version) which he could never finish (nowadays several computer history museums have working models from his original specs) because the printer would never work properly. We commemorate this early milestone in computing today by having our printers never work also.
@spiritplumber
with the exception of these Brother network laser printers that just works. You know, the ones everyone does seem to have (except you, for sure... you're still stuck with the HP-I-want-a-new-cartridge-inkjet 😁)
@ZeugmaFr I have a HL1440 with a parallel port. Still works. I've only had to open it up twice and it became 20 years old in February