Your explanation is way simpler to understand than the lengthy original article. Maybe one addition: the value of 'this' inside a function FN can also be set b

Your explanation is way simpler to understand than the lengthy original article. Maybe one addition: the value of 'this' inside a function FN can also be set by a caller of FN by using the form FN.call(this-ptr-value, arg1, arg2, ..) instead of FN(arg1, arg2, ..)