How is that so? A pretty standard part of usability testing is say heuristic evaluation. You pick the heuristics applicable to the target audience - engineers,

How is that so? A pretty standard part of usability testing is say heuristic evaluation. You pick the heuristics applicable to the target audience - engineers, like be accessible through CLI. No response means the app executed without problems, man doc etc and test. Usability != pretty interface. In fact, sometimes you might not want a beautiful interface, because you want people to get the job done. I think the issue with the original article is that it paints broad suggestions so it is easy for me, you and everyone to argue their point.