Nagel closes his short introduction with a chapter on the meaning of life, asking whether anything we do matters from a larger point of view. For college instructors, the topic works well as a capstone essay because it draws on skills students have built throughout a course, including defining terms and evaluating arguments. It also invites sweeping, sentimental writing that is hard to grade unless the assignment is carefully structured.

The most frequent problem is the essay that reads like a greeting card. It declares that life is about love, happiness, or making a difference, without saying what those phrases mean or why they answer the question. Instructors can respond by requiring that the essay name its standard of meaning and test it against at least one challenging case.

Another challenge is that students often assume the question has an obvious answer that everyone already shares. Asking them to explain what would count as evidence that life has or lacks meaning slows them down. It also reveals whether they understand the difference between feeling that life is meaningful and its actually being so.

Structuring the capstone prompt

A good capstone prompt asks students to take a position, build on at least two course readings, and address a serious objection. Requiring connections to earlier material turns the essay into a synthesis task, which also helps instructors see how well students have absorbed the course. A word range, perhaps 1,500 to 2,000 words, keeps the argument focused and the grading manageable.

• Argue whether a life can be meaningful if the universe as a whole has no purpose
• Explain whether the fact that nothing we do matters in the long run should change how we live
• Compare finding meaning in relationships with finding it in achievement
• Evaluate the claim that meaning is something we create instead of something we discover
• Discuss whether taking life too seriously and not seriously enough are both mistakes

Grading synthesis across the course

A capstone rubric should include a criterion for synthesis, meaning the student's ability to bring earlier ideas to bear on the final question. Strong essays use concepts from the free will or ethics units to support their claims about meaning, rather than treating each topic as a separate box. Weak essays mention earlier readings in passing without using them to advance the argument.

Instructors can make the synthesis expectation visible by asking students to include a short note explaining which readings shaped their view. The note takes only a few minutes to write, and it helps the grader judge whether the connections are genuine. It also discourages students from dropping in references at the last minute to meet a requirement.

Avoiding the trap of sentimentality

Sentimental writing is rarely wrong, but it is often unfinished. A comment that asks "What would someone who disagrees say?" or "Why does this standard count as meaning?" invites the student to turn a feeling into an argument. Over time, students learn that a heartfelt claim still needs a reason.

Instructors should also resist the urge to reward essays that match their own view of life's meaning. A rubric focused on reasoning, objection handling, and clarity prevents that bias. Students notice when grades track argument quality, and they tend to engage more honestly as a result.

Handling a large lecture section

In a lecture course with hundreds of students, a final reflective essay can be a daunting grading load, and teaching assistants may interpret the rubric differently. AI essay grading tools can apply the rubric to every submission, identify papers that lack a standard of meaning or an objection, and produce consistent comments. Graders can then calibrate against the output rather than start from scratch.

Instructors should spot check a sample across the score range and adjust the rubric as needed. If the tool consistently rewards length or confident tone, the descriptors may need to emphasize reasoning more directly. Done carefully, the workflow keeps grading timelines reasonable while preserving the integrity of the assessment.