Put the meaning into your own words.

A cursory glance at the map was insufficient for the unfamiliar route.

A small gallery asked volunteers to review labels for a student exhibition. Jules was a discerning reader who noticed subtle differences between confident description and unsupported interpretation. His astute suggestion was to compare each label with the artist's own notes. A cursory glance could catch a missing title, but it would not reveal every mismatch in the wording.