A machine that reverses aging raises ethical questions almost automatically: who gets access, what happens to those who refuse, and what is lost when time can be undone. When students write about these questions in response to La machine à rajeunir, they are practicing a kind of reasoning that blends literary analysis with moral thinking. Grading such essays requires care, because strong opinions can easily overshadow the quality of the argument.

The most important decision is to define what you are rewarding. You are assessing reasoning, use of evidence, and consideration of multiple perspectives, not the conclusions students reach. Stating this plainly at the start of the assignment helps students feel free to explore difficult positions.

Ethics essays also risk becoming general discussions that barely mention the book. To avoid this, require that arguments be anchored in specific moments or choices from the story. This keeps the essay a literature assignment rather than an unstructured opinion piece.

Criteria for Ethical Reasoning

Useful criteria include whether the student identifies the ethical question clearly, whether they consider more than one perspective, and whether they apply reasoning rather than simply asserting a view. Students who can explain why a choice might be defended and why it might be criticized demonstrate more sophisticated thinking. A good rubric makes this visible by describing what each level of reasoning looks like.

• States the ethical question or dilemma in clear, specific terms
• Uses events and choices from the novel to illustrate the dilemma
• Presents at least two perspectives with fair explanations of each
• Reaches a conclusion supported by reasoning instead of emotion alone
• Acknowledges limits or uncertainty in the position taken

Keep Personal Bias Out of the Score

It is natural for a teacher to find some positions more persuasive than others, and that preference can sneak into scoring. Reading with the rubric visible and scoring each criterion separately reduces this risk. Some teachers also mask student names or randomize the order of reading to limit unconscious influence.

AI grading adds another layer of consistency because it applies the same criteria no matter which stance an essay takes. It evaluates whether the argument is supported rather than whether it agrees with a particular view. As always, a teacher's review ensures that unusual but legitimate approaches are recognized.

Handle Sensitive Topics With Care

Questions about aging, mortality, and health can touch students personally. A student may have a grandparent who is ill or a family member who has recently passed away. Teachers should frame the discussion respectfully and give students room to choose how personally they engage with the topic.

Offering a choice of prompts, some more abstract and others more personal, lets students select an angle they are comfortable with. This approach maintains academic rigor while respecting individual circumstances. It also tends to produce more thoughtful writing because students are not forced into uncomfortable territory.

Teach Students to Argue Fairly

A recurring weakness in ethics essays is a one-sided presentation that treats the opposing view as obviously foolish. Teaching students to state the other side in terms its supporters would accept leads to more credible writing. It also trains an intellectual habit that serves them in many subjects.

Model this skill with a short example in class, then have students practice with a partner before writing. Seeing how a fair summary of an opposing position strengthens the overall argument is often a turning point. Their essays become more nuanced and more persuasive as a result.