Sam’s three uses of lulei d’mistifina:
1)”Lulei D’mistifina, I would say that we have to wonder if the Rambam’s society influenced this Halachah. After all, he also says that a husband should beat his wife if she doesn’t listen to him, something which no one nowadays would agree to.” http://www.theyeshivaworld.com/coffeeroom/topic/brides-wedding-vow-to-obey-husband#post-410478
2)”Lula D’mistifina that it was Apikorsus, I would say a Davar Pashut that the reason the Chachamim over the centuries have not been Moche on drinking on Purim is a similar Cheshbon that the Catholic Church made with Carnival. I can’t say it, because I think that is K’firah, but when that’s what Purim becomes you’ve lost a Yom Tov and created a neo-Pagan holiday.”
3)”Lulei D’mistifina, I would say that Kim’at Kullam would hold that the Arizal’s Hiddur of using a white chicken is an absolute Issur D’Oraisa.”