Programmable matter is probably not the next technological revolution, nor even perhaps the one after that. But it's coming, and when it does, it will change our lives as much as any invention ever has. Imagine being able to program matter itself-to change it, with the click of a cursor, from hard to soft, from paper to stone, from fluorescent to super-reflective to invisible. Supported by companies ranging from Levi Strauss to IBM and the Defense...