Did you read my post about working with designers that don't know programming?
Didn't read it. But that's your opinion based off your 1 game experience from Oz. Hardly enough experience to base a whole article on if you ask me. If the programmer doesn't communicate with the designer and let him know what can and can't be done then it's his own fault.
Technically, a designer isn't required to know squat about programming. I think sometimes being the designer and programmer can be a bad thing. Unless you're a control freak, then it's ok. :p