In the order of the Haggadah, the rebellious child who questions everything sits before the child who has nothing to ask.
Because if the rebellious child questions, it is because it touches him, it says something to him. Perhaps it even bothers him.
But a perfectly capable human being who has no questions about Torah and G‑d—he is stuck in his place.
Perhaps he is a good, observant Jew who does good deeds and never sins. But there is no sense of the spirit, of the meaning of life, of transcendence.
He, too, must leave Egypt, and know of something higher.
There is no such thing as a perfect human being , and those four children are neither! Each one has a personality and that is his manner of receiving instructions. It would be nice if he question, but if he participates in the Seder, he also learns without questioning. In reality, the Haggadah's children are types of personalities, and the point is to declare that involvement is very important in this occasion because Pesach is a foundational history ,and if we don't grasp it , we don't know why we are Jewish and why we must remain Jewish in behavior and mindset.! The preoccupation should be with the one that distances himself and doesn't want to be even in the Seder. That child is throwing everything away, and prefers to not know, not be obligated, not to participate, not be part of Klal israel. That child call himself Jewish because he was born from a Jewish parent, but his neshama is apparently someplace else. THAT is worrisome.