What’s funny is that it’s actually one question, Mah Nishtanah-”Why is this night different?” with four parts. It’s tradition that the youngest child asks the four questions. There are a lot of reasons for this, but one is that Judaism is about teaching and passing down through generations, like the famous saying, L’dor Vador, from generation to generation. The youngest is then to read it, because they are the one who will keep the tradition going. An interesting Hebrew language coincidence is that children in Hebrew is banim. The word is related to three Hebrew roots that mean child, builder, and the one who understands.

The questions used to be improvised by the youngest son, as long as it followed the format of degradation of Israel, its Exodus and praising of God, and ending with the sealing of redemption.


haggadah Section: -- Four Questions
Source: My People's Passover Haggadah