[danabramov]

Of course there isn't a “right” or “wrong” way. I'm sorry I didn't write it more clearly.

Approaches like jQuery soup or making SQL queries from PHP templates aren't “wrong” either. They are friendlier to beginner, too.

When I wrote “wrong” I meant “in my experience, inferior for building applications with complex stateful user interfaces and later maintaining them for a period more than several months in the face of changing requirements”.

Also, I'm not talking specifically about React. Of course it has its own shortcomings. All I'm saying is that relying on `Object.observe` and giving out global state to all components to mutate is the same as using global variables throughout the program. I don't know whether it is helpful to call global variables “right” or ”wrong” but I'd certainly stay away from them when there are ways to achieve the same without future maintenance nightmare.