Trick or Lesson?

reverse says towards the end of the par he says you know essentially you know this whole charade that yakob is going to put on you know these primitive uh you know Le you know clothing and then fool his father come on you know that the shade's not going to work it's not going to last it's going to be found out so what was rifka's objective so it says that rifka's objective was to show look how easy it is for you to be fooled by your son was one of your sons been fooling you a long time look even the other son can fool you so essentially rifka's point was to was to show him this right here what do it have to do with this Rashi is that s be is that he has been deceitful and full St and therefore RI tries to fool him again to show look you've been fooled