While I can recognize there designers that are the exception, it's silly to think and expect your designers to have this ability. The fact of the matter is that

While I can recognize there designers that are the exception, it's silly to think and expect your designers to have this ability. The fact of the matter is that most don't. The same use true for developers. By and large the ones that do are self-motivate individuals running their own startups, or participating on a similar level. I could easily say that it's preferable to have someone understand the core facets of every part of any field, but the truth is that you're lucky if you can find someone that has the core competencies in any specialized area. I've successfully separated our designers from the code that implements their designs for the past 5 years and have got only positive results. The designers don't need to learn anything else, or fumble with code, they enjoy living in Photoshop/fireworks and passing it off. Developers shouldn't be doing any interpreting, the designs should be such they can clearly see what things should be. Nobody said anything about static-mock ups, I said they should be focused on design, not coding. There are plenty of tools available that can allow them to mock-up an effect without coding. I don't know what idealized world you live in, but sometimes you have to accept the situation and work with it. In any event, we can agree to disagree. Since we clearly have 2 different sets of opinions and 2 different sets of work experience history.