and plumbing
Rome's uptime was likely better than the downtown Denver building i lived in (that shall remain nameless) turning off the building's water IN COVID during working hours twice a month
Diocletian had his issues but probably had 3 9's and his his team could shit shower and shave as they pleased
Related question: why aren't we having technological revolutions now that will eventually occur in the far future? Surely, these will happen, so why are we coming up short?