I mean, isn't the colloquial use of efficiency mean "the best you can do"? I openly admit, I'm splitting hairs over a technical term being misused and that shit usually doesn't matter in the world. But in this case, isn't it also incorrect from the most common understanding of the term?

And I obviously disagree with the statement that it's very clear contextually what they mean. Every time I hear it said it makes my brain break as to how that's even possible. It's cause it's not possible, it's relating two terms that aren't related to get an impossible answer.

That being said, I'm autistic so I might be making a mountain out of a molehill. In fact, I'm certain of it. So, it's completely cool that you disagree, it just irks me.