Yeah guess you have a point from that perspective. Though when people say “can’t do”, they are implying that the person is incompetent at the job.

And that I find is quite inaccurate. Doing is a lot easier than teaching others. Applying your engineering knowledge is a lot easier than teaching others engineering. Because if people have questions, you better be able to answer. And as teachers , we get questioned a lot. Students can smell BS from a mile away. There’s google these days for them to fact check too.