I believe artists have a very important responsibility to critique or comment on the world they live in. This commentary is often a very dangerous process, and may be what the curator's mean by "brave." Walid Raad's work is an excellent example of this bravery, as he lived in a war-torn city for a long while, when he could have lived in other, safer, parts of the world. It is this decision to make important art that, to me, is a very brave decision. The world is a very different place than it was, say, only 10 years ago, and this gives contemporary artists much new material to comment on. I think that one of the curators goals was to bring together examples of this exploration of the "new world" from as many places as possible. The works in the exhibit are from artists of different races, religions, and locations, yet they all demonstrate exploration of today's world.
This exhibit might also represents a "brave new world" for the curators themselves. Most curators and exhibits generally focus on a single geographic location, or a specific time period, or a specific media or style of artwork. However, this exhibit knocks down all the boundaries except time. The exhibit has works from around the globe, and in every imaginable medium, even scent. By keeping the time period constant it really forces the viewer to reflect on the present time that he or she lives in. It's also brave for the curators to try to value each culture's art equally, to try and stay detached and without bias. They seem to be responsible for the whole world, and it must be a very difficult task filled with many implications.
This exhibit also requires a certain amount of bravery from the viewers, as most are unfamiliar with this format of an exhibition. They are bombarded by artwork of all mediums and from different cultures, there is even art in the stairwells and behind the walls. They are really thrown out of their comfort zone, but this may lead to much individual growth. This getting out of the comfort zone may be something the curators are encouraging in real life-to engage in today's "new world." It is so easy for us stay in our comfort zone and miss experiencing these other great places and cultures.