[Retra]

So you're fine with a key that doesn't open anything? How will you know it is a key at all then?

>We try to understand countless things without have a use case in mind at the time of study.

You're making a pretty clear reference to mathematics & science here, but in those disciplines we study things with well-defined structures. We don't study flighty nonsense because it's not ever going to be useful. You shouldn't invoke this phrase to excuse a lack of precision and clarity.

[colordrops]

Calling it a key is your own reframing, implying a use case.

[Retra]

You called it a key. I said it is not unless it has a useful purpose.