[wtetzner]

Well, but it's a bit weird with software. The "realized system" typically comes out of a compiler. When designing the system, the computer can often take your design and turn it into a realized thing.

In fact, we even have software called an assembler :)

Of course, it all depends on what level you're doing design at, and what level your language(s) work at. But the point is that those 3 roles aren't necessarily are fulfilled by humans when working with software.

[vonmoltke]

I didn't say they necessarily were all fulfilled by humans. My point is that they are not necessarily all fulfilled by one human. Apropos of the comment I made in response to the "architecture astronauts", the complexity of most software projects is such that the design, from a technical standpoint, is a pretty small portion of the total effort required. In that case it makes sense for the technician to be the designer as well, which is something that often happens in the trades on simple jobs.

That does not mean that there can't or shouldn't be a distinction between the engineer and the technician on sufficiently complex projects. That is, they don't need to be filled by people who could perform either role, as the original comment I was replying to implied. That point was either miscommunicated in my original post or rubbed some people the wrong way.