What is the future of brain-computer interfaces?

Brain-computer interfaces become one of the most transformative technologies of the century. A brain-computer interface is a chip or headset that lets your brain talk to a computer directly, and Elon Musk's Neuralink already has paralyzed patients moving cursors by thought. I predict direct communication between humans and machines opens new frontiers in healthcare, education, communication, and productivity. First they restore lost function for patients. Then they extend capability for everyone. The interface between mind and machine becomes the ultimate platform, and the ultimate ethical test. Technology can empower or control humanity. I picked a side.