Why drag closure into this? Closure is just the ability for code executing in a function to see variables above its immediate scope (interesting/non-intuitive e

Why drag closure into this? Closure is just the ability for code executing in a function to see variables above its immediate scope (interesting/non-intuitive effects when combined with asynchronous logic notwithstanding). The thrust of the article is really about hiding data from access by external code. Closure just happens to be a mechanism JS devs typically exploit to accomplish that.