My experience with outliners dates back to the early 1990s with In Control. While Google Keep offers only a single level of nesting, it has proven sufficient for most of my outlining needs. As a Google product, Keep benefits from seamless integration with a vast syncing network, far surpassing anything In Control could achieve at the time. Pair that with the potential integration of Gemini, and the future possibilities for Google Keep as an app are exciting to consider.