Years ago I read the Nexus trilogy by Ramez Naam. There’s a scene in the first book where the protagonist Kade sits with Buddhist monks at a remote monastery in Thailand and they meditate together, linked through Nexus, the neural nano-drug at the center of the story. The minds in the room become something collective, a shared breath, thoughts rippling through the group like waves through water. The monk Ananda then compares Nexus to reading and writing, tools that let the human mind extend beyond a single skull....