[abathologist]

I'd argue that you understand what a light switch does well enough to use it effectively for its purpose.

When me move from just making use of something to using something to make with, that is when we should have a deeper understanding I think.

Does that sound right?

> the important distinction here is that I wouldn't call myself an electrician if my relationship to the subject matter doesn't extend beyond the desire to flip a switch.

Yeah, that seems right to me!