we’ll effectively “clone” ourselves by training various AIs on our writing and data to create a generalized copilot-style product that can be used for anything. you ask it questions, bounce ideas, and it responds with something a) deeply personalized to you and b) what it thinks you might say. 

has anyone built 

Read a blog post a while back about "human cloning." Author said that would be the biggest technological breakthrough (imagine one Elon and ten other Elon clones: same resources, same intellect). Forgot what the blog is called, can't find it.