[maxwell]

If uptime is the goal, individual humans are impressive compared to almost all human technology.

The Centennial Light has now been running mostly continuously since 1901, while the oldest living human was born in 1904. The bulb hasn't burned out, but has been shut off briefly a few times, which seems comparable to one's heart stopping but being resuscitated.

I'm not aware of any single "technology," in the broadest sense, operating for a longer continuous period of time.