I can imagine it having an impact on a graphics app where a `Point` class might be instantiated thousands of times, or even if the Backbone.Model constructor we

I can imagine it having an impact on a graphics app where a `Point` class might be instantiated thousands of times, or even if the Backbone.Model constructor were hundreds of lines long to attach all the public methods. It would be weird to me to have to spend a few seconds of thought on a per-object basis to think how I should structure the code based on how often I think it will be instantiated. But yes, I also have not been bitten by this. Its just something I've read about how the v8 engine works (and makes sense intuitively). I agree you shouldn't base coding style decisions soley on hearing one way is faster, but I think its a minor point and worth noting. Edit: a link! https://news.ycombinator.com/item?id=2991904 https://news.ycombinator.com/item?id=2991904