And here it is:

react-vs-redux

The diagram is too vague? Need more explanation? Ok, assuming you have an application that is made up with components Root, A, B, C, D, E and F. Root component is the top level, and then state is passed to A and D respectively, these components then have child components of B and E respectively and etc. If the components of share states then using Redux in your application would make development a lot easier.

Compare the above examples, which would be easier to sync state between B and E? In the React example, state will flow like this B => A => Root => D => E. Whereas in the Redux example, state will flow from B => store (not shown in the diagram) => E.

I hope this article was useful to some of you. For a more detailed explanation of what Redux is and how it works I recommend the official documentation for Redux. If you want to understand more about React states, here is the official documentation as well.