In a JavaScript world where arrow functions are everywhere, object and array destructuring are the norm, and functional programming seems to have won the popularity contest; writing about apply and call is hard. In this world, we don’t have any practical use for these functions. So you probably don’t need to know about it today (except if a job interviewer tries to test your curiosity). But who knows? We might need those methods if another programming paradigm replaces functional programing. We’...