The Most Effective Software Development Team
blog.professorbeekums.com
blog.professorbeekums.com
Interesting. Seems to advocate for shared office space and interrupting co-workers (later in the same paragraph).
The author clearly feels that there was a synergy there and doesn't presume to claim any wisdom as to why this was the case.
So we're left to tease out our own conclusions: keep team sizes small, cross-functional and in shared office space.
He's not saying they can't be or shouldn't be judged on anything else. He's saying that, in practice, the person they're reporting to judges their work solely based on how it looks.
It doesn't matter whether or not this is true anyway. It's just a made up example to illustrate the idea.