> In WET code (write everything twice) everything looks primitive, as if it was written by complete newbie, and every change needs to be added at multiple places, but each change is trivial and time to finish is predictable. I would go as far as calling the code boring. The most difficult thing is to resist the temptation to remove the duplicity.

This only scales so far. After some point, it's very easy to run into cases where you meant to change something everywhere but forgot/didn't know about others. Not to say everything should be so compartmentalized as to restrict change, but there is a balance to be had.