Rabbi Dr. Benjamin (Benny) Lau is the director of the Center for Judaism and Society as well as the Institute for Social Justice at Bet Morasha of Jerusalem. Rabbi of the Ramban Synagogue in the Katamon neighborhood of Jerusalem, he is a well-known author and lecturer.
There is a type of "middle of the road" approach in religious observance that is passed down from one generation to the next, an approach that does not always coincide with what is practiced in the world of the yeshiva. It is quite common for a son to return from yeshiva and begin to find fault with the practices of the household: he doesn't approve of the size of the Kiddush cup; he wants to wear tsitsith so that they hang outside his shirt; he objects to preparing tea on Shabbat (by means of a "third vessel"), but insists on using tea concentrate, and so on.