I wasn't there when they installed the scales. I didn't go through a training session where they explained the scales. If, for some reason, I could reasonably

I wasn't there when they installed the scales. I didn't go through a training session where they explained the scales. If, for some reason, I could reasonably been expected to know about the scales, I might agree. But I do not. It's like saying you don't know how to speak fluent Italian because you don't pay attention. There was no expressed expectation that you were supposed to learn Italian.