When they're still young, children tend to see the world without preconceptions,  which can give them a unique perspective. And sometimes they see things that adults should be glad that they can't...
Oh, is that why?
أهذا هو السّبب؟
Ach, deshalb.
¿En serio?
¿En serio?
Ah, d’accord…
Ah, davvero?
Hã? É por isso?
О, вот как?