Design vs Art

I recently went to the Museum of Modern Art in New york which ahd a really interesting section dedicated to the idea that design is not art and art is not design, but what happens when the two swap places?
There were many pieces which illustrated where design comes into practice when dealing with every day objects such as chairs, we see some which are highly impractical but entirely beautiful! It was an interesting exhibition, I have some pictures which I will upload when I can, to illustrate the ideas broached.
I was also reading a great book (which I have already posted about) Cracking The Whip (Ralph Caplan), which has an article on the importance of art in design and the differences between the two. this could be a possible topic to research for my dissertation.

Excerpts from the Moma website:

Design is not always pretty. Sometimes it is blunt and aggressive, especially when it is meant to deliver a clear message or depart from tradition and express new ideas. Rough Cut presents a selection of bold designs from MoMA's collection, ranging from striking posters to fierce chairs, and from incisive videos to vehicles designed for harsh terrains and unforgiving circumstances. Design is not always pretty—but when it is good, it is undeniably powerful, meaningful, and beautiful.

At mid-century MoMA played a leading role in the definition and dissemination of so-called Good Design, a concept that took shape in the 1930s and emerged with new relevance in the decades following World War II. This installation presents selections from MoMA's design collection that illuminate the primary values of Good Design as promoted (and disputed) by museums, design councils, and department stores. Iconic pieces by designers like Charles and Ray Eames and Hans Wegner are shown alongside more unexpected items, such as a hunting bow and a plumb bob, as well as everyday objects including an iron, a hamper, a rake, a cheese slicer, and Tupperware.