The problem with 'this' (well, one concern): sometimes you don't have a choice. Suppose you consume a library, where you call a function, passing a function as

The problem with 'this' (well, one concern): sometimes you don't have a choice. Suppose you consume a library, where you call a function, passing a function as an argument. Your function's this context can be overwritten, even if you don't desire it to be. I recently ran into this issue when consuming a third party library.