Michael Chorost uses the brain's own structure to imagine the future:
Without a corpus callosum, the right and left halves of the brain would feel like, and be, separate entities. For any kind of unified consciousness to emerge from disparate parts, it needs fast and massively parallel communication. This is exactly what humans and the Internet lack. We are Paleolithics poking away at Pentiums. But what if we built an electronic corpus callosum to bind us together?
What if we eliminated the interface problemthe slow keyboards, the sore fingers, the tiny screens, the clumsiness of point-and-clickby directly linking the Internet to the human brain? It would become seamlessly part of us, as natural and simple to use as our own hands.