TensorFlow: everything to all people.<p>Eager is actually not as innocent as "open-source projects borrowing the best parts from each other", as some commenters here suggest.<p>Google is attempting to dominate the machine-learning API and the Python ecosystem for scientific computing.<p>The company that controls the API influences which apps are built on it and how. Think about how Google bundled Android services on top of Android, and how that posed an existential threat to other companies. That's what's coming for TensorFlow. Many developers are too naive to realize it, or too short-sighted to care.