title: accessing the arguments object is expensive.. huh?
body: <p>I've heard alot of people saying that accessing the arguments object is expensive. (example: <a href="https://stackoverflow.com/questions/103598/why-was-the-arguments-callee-caller-property-deprecated-in-javascript">Why was the arguments.callee.caller property deprecated in JavaScript?</a>)</p>
  
  <p>Btw what exactly does that statement mean at all? isn't accessing the arguments object simply a simple property lookup? what exactly is the big deal?</p>