The Mishna details questions one is obligated to ask on the night of the seder. It is customary for the youngest child present to recite the four questions. Some customs hold that the other participants recite them quietly to themselves as well. In some families, this means that the requirement remains on an adult "child" until a grandchild of the family receives sufficient Jewish education to take on the responsibility. If a person has no children capable of asking, the responsibility falls to their spouse, or another participant. The need to ask is so great that even if a person is alone at the seder they are obligated to ask themselves and to answer their own questions.