There's no point in wondering if there are aliens among us camouflaged as humans, conducting research while masked as your friends and neighbours. Be an optimist: it's much more likely that they're walking around with their nude green bodies unsheathed, just too tiny to see.
Masa Kawamura, Qanta Shimizu and Aramique directed the new Cut Copy video for "We Are Explorers," and they claim that the curious alien protagonists are 3D printed models you can download here. But we're onto them. Watch the documenta - I mean ficitional music video for promotional purposes below.