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Monday, October 27, 2025

MODULE 5: Justice Across Ages (1)

Module 5: Justice Across Ages

People are treated differently based on age all the time. Differences you have encountered....
  1. Up until recently, people under 70 had to remove shoes at airport, but 70+ didn't have to
  2.  People over 65 get discount admission at many events, discounted DART tickets, free classes at some community colleges
  3. Student discounts
  4. kids meals only for kids
  5. discounts at theaters for kids
  6. drinking age
  7. under 3 on lap on planes
  8. sitting by door on airplane--16 and up?
  9. voting rights
  10. car insurance higher when younger
  11. no car rental if under 25
  12. driving age, marriage age
  13. renting to people
  14. travel age limits
  15. sexual relationships, age rules
  16. rides based on age, and not just height
  17. mandatory retirement  65, 62
  18. mandatory retirement for some professions
  19. qualifying times based on age

When is this sort of differential treatment by age fair and ethical? When is it unfair, unjust, discriminatory, unethical?

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Plan for Module 5
  1. Our main guide: Juliana Bidadanure (Bee-da-da-NOOR--ay) -- philosopher at NYU 
    • We're reading excerpts from her book Justice Across Ages: Treating Young and Old as Equals (2021)
    • Originally from France, so has European perspective
  2. Also a few other authors
The general question about age and justice 
Specific issues
  1. guaranteed jobs for youth (EU)
  2. mandatory retirement for elderly (Martha Nussbaum, Saul Levmore)
  3. right to vote --should the voting age be lower?  (John Wall)
  4. leniency for child criminals (Gideon Yaffe)
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Reading this book (5 classes)--
  • great to read full assignment, if you can (but it's hard)
  • possible to answer RRs even if you can't read it all
  • much better to write tentative semi-correct answers than to turn to AI in the prohibited ways
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Justice Across Ages Chapter 1 (excerpts)
  • introduces some puzzles about justice and age
  • introduces basic terms, concepts, theories

The puzzle of Mary and Beth
Is it unfair/unjust that Mary (professor, age 50) is better off than Beth (grad student, age 25), for age-related reasons?



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Terminology -- age group, birth cohort, diachronic inequality, synchronic inequality, egalitarianism

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The puzzle of differentiating by age vs. by race and gender 
  1. Differentiating by race or gender...often seems wrong, unjust, discriminatory
  2. Similarly differentiating by age...seems not so bad!
Why does differentiating by age seem not so bad? Is it really just perfectly fine?

Examples (many on p. 25)

  1. White people can keep their shoes on at airport
  2. 70+ people can keep their shoes on at airport
  1. Apartment doesn't rent to men
  2. Apartment doesn't rent to people under 25
  1. Airline doesn't hire female pilots
  2. Airline doesn't hire pilots over 65
  1. Tech company prefers male applicants
  2. Tech company recruits at college job fairs

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Gut feeling--all the 1s are really bad, but the 2s are less bad.  How can you defend that intuition?

The bad explanations (according to JB, p. 27-30)
  • age is a good proxy for things we legitimately care about, bur race and gender are not
  • age differentiation serves a good purpose
  • age differentiation benefits different individuals in different contexts
The good explanation
  • the 1s lead to diachronic inequality
  • the 2s don't--everyone is sometimes advantaged, sometimes disadvantaged, by the 2s

So yes, she thinks age inequality is not as bad

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Complete lives egalitarianism -- only diachronic inequality matters
  • Bidadanure thinks diachronic inequality does matter more, but it's not the only thing that matters
  • Rest of book: when/why does synchronic inequality (between age groups or birth cohorts matte)?


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  Next question--when/why is age inequality bad?
  • Chap 2-- Prudential Lifespan Account
  • Chap 3 -- Relational injustice
But first--section 1.4
  • Much of the book is about age groups
  • Section 1.4 is about birth cohorts/generations
  • If your generation will be worse off than the previous generation, is that unfair?