There's room for both extreme concentration and extreme communication, and most teams need some of each.

I actually snorted at the essay's idea that communication and concentration can't mix. I'm not sure what he thinks email and detailed specs are if not communication. I think the key is that they're batch-mode communication.

I can see value in several hours a day of concentration unbroken by communication, but insisting on a full week straight of unbroken concentration is impractical and possibly counterproductive.