> I think an even more interesting perspective is that they aren't the same thing, but they can be implemented in terms of each other.

I don’t know, I think that it’s perfectly reasonable even from an engineering/computer science perspective to say that they are literally the same thing, just viewed from two different perspectives.

After all, what is an object? It’s some code, with bundled data. What is a closure? It’s some code… with some bundled data. I think it’s fair to say that this is a “is it a vase or two faces?” situation. You’re looking at the same image, just seeing it from different perspectives.