In Accelerando [1], humanity becomes a Type II civilization and builds a Matrioshka swarm. But it shines sunlight on Earth by opening up a hole in the swarm so

In Accelerando [1], humanity becomes a Type II civilization and builds a Matrioshka swarm. But it shines sunlight on Earth by opening up a hole in the swarm so that the sun is visible to Earth. That would allow harnessing almost all of the Sun's energy but would let Earth remain as a stable nature preserve for nostalgia purposes. [1] http://www.antipope.org/charlie/blog-static/fiction/accelerando/accelerando-intro.html http://www.antipope.org/charlie/blog-static/fiction/accelera...