scenario 'Creation date works differently in roots and in child comments, when sorting by confidence_score' do
   old_root = create(:comment, commentable: poll, created_at: Time.current - 10)
   new_root = create(:comment, commentable: poll, created_at: Time.current)
   old_child = create(:comment, commentable: poll, parent_id: new_root.id, created_at: Time.current - 10)
   new_child = create(:comment, commentable: poll, parent_id: new_root.id, created_at: Time.current)