Robotic surgery works best for operations that require small incisions and levels of precision that would be difficult for even the nimblest human, according to Wired. In a demo video from Intuitive Surgical, a multi-armed machine is dextrous enough to paint a tiny picture—while guided by a human, at least. Real-world applications include removing cancerous tissue, performing hysterectomies, and bypass surgery, according to Wired. The smaller incisions enabled by machines mean smaller scars and less bleeding for patients, according to the article.