I’m super not embarrassed to admit that I just learned:
ES6 arrow functions do not have their own `this`. They inherit `this` for free without having to do `.bind` or `self = this`. 
That’s what I mean. IMHO it’s just easier to think of it the other way around instead of remembering those four exceptions.
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ahhh... ok... now i get your meaning. thanks.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Those, and `this`, are not special-cased or anything — it’s just that arrow functions don’t create a new function scope.