Who (or what) comes to mind when you think about reliability? A specific person? A type of person? An inanimate object that has withstood the test of time?

What if you consider this definition from the Cambridge dictionary?

Someone or something that is reliable can be trusted or believed because he, she, or it worksor behaves well in the way you expect:

Reliable is often determined by consistency of results. Past performances repeated in the same way over and over again creates a sense of reliability. This means we create a set of expectations on how we think something, or someone should be.

What do we make it mean when the result is different from our expectation? That the person was wrong? That the expectation was wrong? Do we change future expectations based on this result?

Is it reasonable to pose an expectation of behavior on another person? If they don’t live up to our expectations, do we punish them for it? Did they even know what the expectation was or what the consequence might be if they didn’t manage it?