I hear from Famous as UI System, but what is (in simple words) Framework - Engine - The Machine - The User... the blog post is really confusing. Got it after w

I hear from Famous as UI System, but what is (in simple words) Framework - Engine - The Machine - The User... the blog post is really confusing. Got it after watch the Website: "The Famous Framework is a new JavaScript framework for creating reusable, composable, and interchangeable UI widgets and applications. It balances declarative with imperative and functional with stateful, and it's built on top of the Famous Engine."