When people are learning something new, they often go through an opinion-forming phase where they internally argue the merits (or not) of what they do. Hence, t

When people are learning something new, they often go through an opinion-forming phase where they internally argue the merits (or not) of what they do. Hence, the need for vocalisation? Once they know something well, or are happy with what they know and the decision they have come to for themselves, they do not feel the need to talk about it?