JSON.stringify函数

为什么要精确化对象？JSON不了解功能（并且不应该）。如果要传递对象，为什么不采用以下方法之一？

var x = {name: "FirstName", age: "19", load: function () {alert('hai')}, uniq: 0.5233059714082628};function y(obj) {    obj.load();}// worksy({name: "FirstName", age: "19", load: function () {alert('hai')}, uniq: 0.5233059714082628});// "safer"y(({name: "FirstName", age: "19", load: function () {alert('hai')}, uniq: 0.5233059714082628}));// how it's supposed to be doney(x);