this gist aim at illustrating the arguments.

what the arguments really refer to

 var what_the_arguments_refer_to = function(fn) {
 		return function() {  // arguments -> this function
 			//debugger;
 			var args = Array.prototype.slice.call(arguments);
 			return fn.apply(null, [1].concat(args));
 		};
 	};
 var console_log_closures = function(a, b, c) {
 		return console.log(a, b, c);
 	}
 what_the_arguments_refer_to(console_log_closures)(3, 4);//1,3,4

So:the arguments in inner closures is refer to the inner anonymous function.

what the arguments really refer to?

 var doParallel = function(fn) {
 		return function() {  // arguments -> this function
 			//debugger;
 			var args = Array.prototype.slice.call(arguments);
 			return fn.apply(null, [1].concat(args));
 		};
 	};
 var f = function(a, b, c) {
 		return console.log(a, b, c);
 	}
 doParallel(f)(3, 4);//1,3,4

So:the arguments in inner closures is refer to the inner anonymous function.