Reliability of anything can be described by the same generic bathtub curve — https://en.wikipedia.org/wiki/Bathtub_curve. We used to have a lot of technology that would wear out very slowly, but early failure was more common. Now most technology doesn't last more than a year or two, but generally doesn't fail upfront.

> But I do have done physical dumb devices

Can you rephrase this? I don't understand the point you're making. Two verbs against the same subject but with different temporal context, perhaps you stuggle with communicating sometimes?

Obviously a typo -- done -> some

This is a weirdly confrontational comment.

> physical dumb devices

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.