It's possible for paralysis victims to type and otherwise communicate with the world, but they usually have to do so at a glacial pace. They might not be nearly so limited in the future, though. In experiments combining BrainGate2 (a high-speed neural implant system) with text entry software, researchers had a Lou Gehrig's sufferer type words at six words per minute. While that may not sound quick on the surface, it's incredibly fast for someone relying solely on mental activity to write a message.