Once the OS and app hooks are in place, I think its biggest win is going to be plain language automation. Even if we don't have it write all of our emails and report, simply being able to say "show me the emails Bob sent about the project" or "did Bob ever say he was going to call Phil?" and get an accurate answer will be huge. We're approaching that in programming, when I can use general terms to automate operations within a codebase. The dream of "programming" with plain language may finally be realized.