Elon Musk is now backing a new company, Neuralink, a brain-computer interface venture. Musk broke the news on Twitter Tuesday morning. The company specializes in "neural lace," an appendage that attaches to the brain, allowing a way for the brain to interact with devices. While the lace interacts directly with the brain, the Musk noted that attaching it would not require extensive surgery. The entrepreneur noted that it could be implanted intravenously.