Physical dumb devices that are 100+ years old are usually made out of pretty durable, but individually replaceable parts. Thus they get fixed if they do break. The mechanisms are usually pretty easy to figure out, so you can spot if a spring is broken, a bolt is loose, a thing stopped turning, etc.
Physical dumb devices that are 100+ years old are usually made out of pretty durable, but individually replaceable parts. Thus they get fixed if they do break. The mechanisms are usually pretty easy to figure out, so you can spot if a spring is broken, a bolt is loose, a thing stopped turning, etc.