[da_chicken]

> In that case, following specific constraits to solve a math problem, or to draw an artwork (e.g. using perspective) is also "engineering". That's too loose a term to be of any use.

You're being deliberately obtuse and consistently choosing semantic equivocation, so I'm not really going to engage with you any further, but the point is that there is a specific methodology that is unique to engineering. You've heard of the Scientific Method. There is also the Engineering Method.

Ultimately, though, the problem is you're arguing that the map is the territory. The the arbitrary linguistics we have chosen in the past must always and forever be the same. And that's just not a useful model of reality.