The RAD Lab is remodeled space on south end of the 4th floor of Soda Hall. Remodeling began after the end of classes in May 2006 with move-in happening in October 2006. We have room for 56 people and the area covered 4100 assignable square feet before the remodeling. The total cost was under $500,000, including everything: demolition, reconstruction, painting, furniture, white boards, screens, projectors, …
The idea was to mix the faculty and students from multiple disciplines into nice open space to increase interaction across disciplines. The hope was that this interaction will lead to great ideas. Quoting Turing Award winner Richard Hamming of Hamming-distance fame from his 1986 talk :
“I noticed the following facts about people who work with the door open or the door closed. I notice that if you have the door to your office closed, you get more work done today and tomorrow, and you are more productive than most. But 10 years later somehow you don't know quite know what problems are worth working on; all the hard work you do is sort of tangential in importance. He who works with the door open gets all kinds of interruptions, but he also occasionally gets clues as to what the world is and what might be important. Now I cannot prove the cause and effect sequence because you might say, 'The closed door is symbolic of a closed mind.' I don't know. But I can say there is a pretty good correlation between those who work with the doors open and those who ultimately do important things, although people who work with doors closed often work harder. Somehow they seem to work on slightly the wrong thing - not much, but enough that they miss fame.”
Some believe that if they put cubicles into open space, they have RAD Lab-like Space. We disagree. Now that we've been living in the space for 6 months, we have strong opinions on why the space is so effective:
Faculty find that meetings in the RAD Lab meeting rooms work much better than in their old Soda Hall faculty offices. Many have suggested theories as to how this could possibly be true:
An early evaluation of this is experimental space is found in a survey taken in December 2006, 2 months after we moved in. It showed that 70% of people come into Soda more as a result of the RAD Lab and that 85% have had multidisciplinary interactions. People like the easy access to people, the pleasant space, free drinks, meeting rooms, big displays, whiteboards, and a sense of community. Concerns were about the blinds/lighting at desks and knocking at the door.
One of the bets of the physical RAD Lab was that faculty accessibility would attract students to Soda Hall to increase the chances of innovation due to spontaneous, unplanned meetings.
What we didn't realize was that access to faculty would be attractive to potential graduate students as well.
Historically, we get land about 40% to 50% of admits. This was even true in Spring 2006, which was after the RAD Lab project started but before we built the physical RAD Lab. We had thought that a new research project that was sponsored by Google, Microsoft, and Sun would be an effective recruiting tool, but the yield was within historical norms.
In Spring 2007 we hosted meetings in the new RAD Lab for the OS/Networking graduate students, and they said they really liked faculty accessibility. The 2007 yield backs up that observation: it was 85%, the highest in memory.
Hence, faculty availability via open space helps bring both current and future students to Soda Hall.
One HCI paper studied the impact of space on productivity. They found that radical collocation could double productivity. Here is the abstract of their paper:
Companies are experimenting with putting teams into warrooms, hoping for some productivity enhancement. We conducted a field study of six such teams, tracking their activity, attitudes, use of technology and productivity. Teams in these warrooms showed a doubling of productivity. Why? Among other things, teams had easy access to each other for both coordination of their work and for learning, and the work artifacts they posted on the walls remained visible to all. These results imply that if we are to truly support remote teams, we should provide constant awareness and easy transitions in and out of spontaneous meetings.“
As in the RAD Lab survey, they highlight the importance of easy access to others, and reference other work on the importance of having people nearby and within sight to encourage interactions.
One of the main drivers of success was the fact that the team members were at hand, ready to have a spontaneous meeting, advise on a problem, teach/learn something new, etc. We know from earlier work that the gains from being at hand drops off significantly when people are first out of sight, and then most severely when they are more than 30 meters apart.”
They also saw the value of whiteboards, as in the RAD Lab survey,
Team members used much of the whiteboard space to support their problem solving meetings…“
They conclude that the productivity improvements are astounding.
The correlation between distance and communication is called the Allen curve because Allen found that the frequency of communication between engineers drops off exponentially as the distance between them increases. After about 50 meters, there's very little communication between groups of engineers. Allen recently co-authored a new book that examines the relationship between space and innovation. 
Some wonder whether telephones and email change the observation. Allen studied the question, and they don't. As he says 
We do not keep separate sets of people, some of which we communicate in one medium and some by another. The more often we see someone face-to-face, the more likely it is that we will telephone the person or communicate in some other medium.” [p. 58]
Moreover, complex conversations need to be face-to-face:
Discussing anything that is complex or abstract by telephone or email is very difficult. We need to meet directly with the person. … [A study concluded that] the telephone was used extensively for communicating on simple topics, even if distance was short. … Face-to-face was used extensively for communicating complex topics, even if distance was extended.“ [p. 60-61]
And we need subtle clues to have effective communication:
First, many things … are difficult to communicate with words alone. We need the assistance of diagrams or sketches. In addition, we often need the feedback that comes from looking into the other person's eyes, which communicate understanding. … Body language … provides unspoken feedback that is very powerful. … This feedback system is invaluable in guiding communication.” [p. 60]
He categorizes communication three ways: 1) for coordination, 2) for information sharing, and 3) for inspiration. This last category is important:
In an organization that relies on creative solutions to problems, communication for inspiration is absolutely critical. It is usually spontaneous and ofter occurs between people … [drawn] from different disciplines.“ [p.28]
we found that 80% of the information underlying new ideas came through personal communication.” [p.86]
and most strongly affected by the space:
communication for inspiration is the type most affected by the type of physical space. Most communication of this type occurs during chance encontours which create the possibility for inspiration and creativity–the sources of innovation. It is very obvious that the ways physical space is configured it can strongly promote or impede the occurrence of chance encounters.“ [p. 86]
What space encourages chance encounters? Being close
First, it seems obvious that an organization … needs to ensure that the distances among [staff] are minimized. … to minimize distances, it seems a square single story building is most desirable. We say single story because evidence indicates that vertical separation always has a more severe effect…” [p. 71]
and being able to see people
In the realm of communication for inspiration … visual contact is probably the most important. If people do not see each other, they will not have the opportunity to interact and create that knowledge.“ [p. 73]
The lack of offices in the RAD lab helps shorten distances and enables visual contact, as do the windows on meeting rooms. The extensive white boards make it easy to do sketches in unplanned face-to-face meetings.
After examining 62 NSF-funded centers in computer science, one group of social science researchers found that multiple disciplines increase chances of research success, while research done in multiple institutions—especially when covering a large expanse—decreases them:
The multi-university projects we studied were less successful, on average, than projects located at a single university. … Projects with many disciplines involved excelled when they were carried out within one university. 
Allen's book  provides data that supports skepticism of the effectiveness of geographically distributed centers. Allen's premise is that face-to-face communication in general and specifically communication for inspiration are necessary for innovation.
First, there is by definition almost no opportunity for face-to-face encounters when people are scattered about the country. It will be a long time before telepresense can match the important feedback from looking into people's eyes and reading body language.
Second, the book measures probability of communication of any kind. (This data is comes from a study of a single company, so in some sense its more integrated than government funded research centers, and so these numbers could be high; Table 3-1, page 65)
Here are three models for such centers:
This research supports our experience that a multidisciplinary group in an integrated single space will be significantly more creative and productive than people distributed about a building or campus. Fortunately, the RAD Lab took advantage of being at a single site to create a small integrated space with easy visual contact to enable inspirational communication that enhances creativity and innovation.
Allen's book mentions the design of space for communication and space for concentration While it seems that technology cannot yet overcome distance and walls to be as effective as open space for communication, the success of the RAD Lab may be because technology allows concentration without private offices Here are specific technologies that help:
* Cell phones mean phones don't ring (with a sound designed to disrupt break your concentration) and you don't have to overhear conversations on land-line phones
* iPOD and headphones reduce unwanted noise and plays music that inspires you without bothering others
* Big displays provide a larger set of images to capture and sustain your attention
* Instant Messaging status lets you tell others in the lab if you're interruptable or not
* Laptops/home broadband make it easy for people to do part of their work at home in a normal day, which offers some concentration time while still putting in a full day in the RAD Lab
[http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=6100] Allen, T. J. (1977) Managing the Flow of Technology: Technology Transfer and the Dissemination of Technological Information Within the R&D Organization : MIT Press, Cambridge, MA.
[http://www.elsevier.com/wps/find/bookdescription.cws_home/709115/description#description] Allen, T. J. and G. Henn (2006) The Organization and Architecture of Innovation: Managing the Flow of Technology : Butterworth-Heinemann, 152 pages.
[http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fwww.cs.virginia.edu%2F~robins%2FYouAndYourResearch.html&ei=O1jgRaScI6PAhQOl1qDeBw&usg=__df4KaX_XGsSQykAx51uv9cu7gzY=&sig2=bAenBCT0YVg8M6ke8GJs2g] Hamming, R. You and Your Research, presentation, Morris Research and Engineering Center, Bellcore, March 7, 1986.
[http://www.google.com/url?sa=t&ct=res&cd=2&url=http%3A%2F%2Fpossibility.com%2FMisc%2Fp339-teasley.pdf&ei=Y1TgRdKoCafIgQPi5MymBw&usg=__MZ5FIaCqIRo4VWi0G2ynpGC009U=&sig2=4VFs6aMWCbZ7_DtYLYgJbw] Teasley, S., Covi, L, Krishnan, M. S., & Olson, J. S. (2000). “How does radical collocation help a team succeed?” Proceedings of the 2000 ACM conference on Computer supported cooperative work 339-346.
 Zajonc, R.B., Heingartner, A. & Herman, E.M. (1969). Social enhancement and impairment of performance in the cockroach. Journal of Personality and Social Psychology, 13, 83-92.
 Cummings, J. and Kiesler, S. (2005). Collaborative research across disciplinary and organizational boundaries. Social Studies of Science 35, 5 , 703–722.