What this means in practice
Not every score deserves equal trust. Source confidence reflects how much public evidence backs a rating: whether the occupation's tasks are well documented, whether research sources agree, and how uncertain adoption timing is for that kind of work.
Clerical roles like Data Entry Keyers carry relatively high confidence because the task evidence is unambiguous and the automation pattern is already observable. Scores for fast-moving creative roles like Animators carry more uncertainty, because tooling capability is changing faster than labor-market evidence can confirm.