if one compares quantum computer progress to normal computer progress, then we a) just barely exited the era of theoretics-only (19th century, Babbage) b) jus

if one compares quantum computer progress to normal computer progress, then we a) just barely exited the era of theoretics-only (19th century, Babbage) b) just barely entered era of analogue devices-only (1900s, beginning of vacuum lamps) c) still a decade away from barely practical computers (1940s, Turing and germans) if you want to learn "what will be practical once usable quantum computer appears", look at https://quantumalgorithmzoo.org/ https://quantumalgorithmzoo.org/