- Please do self-rating at Canvas (due Dec 9)
- Course evaluations are at Canvas
- Study guide
- Workbook
- Office hours this week: after class today, Thursday 2-3
Lifespan Ethics
Monday, December 8, 2025
MODULE 6: Review for final exam
Friday, December 5, 2025
MODULE 6: Radical Life Extension
- Come with questions!
Two questions Fischer and Cave ask
- Would RLE 6000 be good for you? (prudential question)
- Would RLE 6000 be good for us? (question about ethics, justice)
- If everyone took, then there would be a huge population increase (see graphs below)
- If it was restricted to the rich .... social injustice
- If there were limits on childbearing .... social injustice

- RLE200 eliminates aging, cancer, heart disease, etc.
- enough to make the lifespan 200 years on average, not 6000
- suppose we really had RLE200
- how should it be distributed? WORKBOOK
- after we discuss, we will vote using this poll
| ChatGPT prompt: what would be the population 10,000 years from now if people reproduced at replacement level and lived for 6000 years? |
| ChatGPT prompt: what would be the population 10,000 years from now if people reproduced at replacement level and lived for 200 years? |
Wednesday, December 3, 2025
MODULE 6: Radical life extension
Tuesday confusion
- Tuesday classes are the usual Tuesday classes!
- Our last day is Monday
_________________________
Final exam (tab above)
- A few differences from last time
- Movie question
- Review Monday
_________________________
Radical life extension
- Would it be good for you, as an individual? (the prudential question)
- Would it be good for us, as a society? (the ethical question)
- population concerns
- inequality
| Source: chat-gpt |
- is this an unacceptable inequality? (Fischer discusses in next excerpt)
Monday, December 1, 2025
MODULE 6: Radical life extension
Preview
- Final exam study guide is at tab above -- we will discuss a little Wednesday and review Monday.
- Office hours next week -- Monday 2-3 plus later in week (TBA)
Recap: Should We Choose to Live Forever?
Our current lifespan
]
Lifespan with radical life extension
- Would radical life extension be good for me? (this is Fischer's focus)
- Would radical life extension be good for us? What would be the social costs? (Cave, next time)
- John Martin Fischer, Thomas Nagel. Optimists about RLE.
- Stephen Cave, Bernard Williams, others. Pessimists about RLE. Fischer calls them "immortality curmudgeons" and "apologists for the status quo."
- Makes positive argument for RLE--all the goods of life will still be available (ch. 2 section 8, p. 105)
- Responds to the pessimists worries about RLE--thinks they're mistaken worries
- loss of identity
- loss of motivation
- loss of narrativity -- no coherent, human "story of my life"
- altered stages -- loss of old age, addition of other stages
- problem of boredom -- can't avoid boredom; or if I could, only by losing my identity (Williams)
- negligible senescence (Andrew Steele's term) -- chances of death will be the same throughout the lifespan
- when you're 5900 years old you won't think "I'm running out of time" (Lost Horizon--no sunset!)
- you may think "I've been alive for a long time" .... maybe there will be special honors for "elders" in their 5000s...
- there won't be old age in our sense....no "senescent old age"
- Jeffrey Arnett -- talks about master narratives; the new stage of emerging adulthood
- Patrick Tomlin -- remember taking adulthood away from Erin -- how is loss of old age the same or different?
- Laura Carstensen--what's the impact of thinking "time is running out"? will immortals ever feel this way?
- Simone de Beauvoir -- what's the impact of "time is running out"? is it good or bad?
- "an envisaged immortal life does not have to be just like ours to be recognizable as a human life" (ch2 section 6.2, p. 86)
- people in 1900 would have been crazy to make the "altered stages" objection to extending life from 40 to 80 years (ch2 section 6.2, p. 87-88)
Friday, November 21, 2025
MODULE 6: Radical life extension
- Is the human lifespan about the right length, just as is, despite death and disease?
- Or would we better off if we could "cancel old age" (as Steele proposes) and make it much longer?
_________________________
Fischer and Cave, Should You Choose to Live Forever?
Living forever (definition, p. 62-69)
- True immortality (not what he's interested in)
- impossible to die
- Radical life extension
- no aging, disease, or internal catastrophes like heart attacks and strokes
- can still die due to external causes
- normal lifespan would be about 6000 years
rejuvenation & permanent youthfulness- Q: will people look different as they get older?
- Radical life extension PLUS favorable circumstances
- resources
- fellow travelers
- Age of Adaline, In Time, Man from Earth
- solved by fellow travelers
- Q: is it completely solved?
- Will Salas's mother appears to be his age (In Time)
- Adaline's daughter appears to be her mother (Age of Adaline)
- John Oldman's son appears to be his father (Man from Earth)
- problem solved by no rejuvenation, no permanent youthfulness
- Q: is generation blurring actually a problem?
- Q: will it be completely eliminated by RLE as specified by Fischer?
- If you were offered one more week of life, you would always choose it.
- Those extra weeks could add up to 6000 years, if RLE existed.
- Therefore, RLE is choiceworthy.
- Personal identity -- the 6000 year old person one day inhabiting my body won't be me
- Death is motivating -- RLE will lead to procrastination
- What does Fischer say?
- Narratives create meaning, and a 6000 year long life will be narratively deficient
- Life has stages -- but a super-long life won't have stages
- Boredom
- To stave off boredom, I will have to shift to one activity after another.
- Either I will be unsuccessful, so incredibly bored, so life won't be worth living.
- Or I will be successful, but no longer me.
- One way or the other, I won't be better off choosing RLE
Wednesday, November 19, 2025
MODULE 6: Radical life extension
Note:
- We don't have class on Monday Nov 24 or Wed Nov 26
- We do have class Friday!
We'll use the WORKBOOK for today's discussion.
Monday, November 17, 2025
MODULE 6: The cure for old age
- Could there be a cure for aging? Should such research be pursued? (Nov 17)
- Reading: Andrew Steele, excerpt from Ageless: The New Science of Getting Older Without Getting Old)
- Should you choose to live forever? (Nov 19, 21, rest of semester)
- Reading: Stephen Cave and John Martin Fischer, excerpts from Should You Choose to Live Forever: A Debate
- Fischer: YES
- Cave: NO
- Next time: Fischer
- notions of immortality and extreme longevity in religions, novels, movies, plays
- the notion of extreme longevity that he will focus on
- we'll talk about extreme longevity in the four movies you watched
- Could there be a cure for aging?
- Should such research be pursued?
- "1-2 percent change of dying every year" (p. 2)
- just as likely to die in first year as in 100th year
- grey hair, wrinkles, balding, elongating noses and ears
- hearing loss, sight loss, weaker muscles, memory loss
- heart disease, cancer, kidney disease, etc.
- risk of death doubles every 8 years (p. 2)
- "being old is the single biggest risk factor for all of the diseases just mentioned" (p. 3)
- "An 80-year-old is 60 times more likely to die than a 30-year-old--so, too are they 30 times more likely to get cancer, and 50 times more likely to get heart disease." (p. 3)
- "aging is responsible for more than two-thirds of deaths--and over 90 percent in rich countries" (p. 4)
"A natural disaster on this scale would be utterly unprecedented. A huge and immediate international relief effort would be mounted, even if success was uncertain. If a disease with these symptoms were to suddenly arise in a previously ageless civilization, Herculean efforts to cure it would begin as soon as possible.
But its ubiquity also means that aging is the default; its inevitability makes it invisible. We see individual tragedies as friends and relatives age, and acknowledge the horror of the specific diseases that afflict them but society is collectively casual about aging itself. This rolling worldwide pandemic of death and suffering goes unrecognized, too large to grasp, obscured by its own enormity.
We humans are beset by a cocktail of cognitive biases." (p. 5-6)
Cognitive biases that stop people from seeking a cure for old age
- Can't imagine every being old, or what it might involve (p. 5)
- Old people hidden away in hospitals, retirement homes (p. 5)
- status quo bias (p. 12)
- adaptive preference (Nussbaum discusses)
"The consequences will be profound and wide-ranging, for all of us personally, for our friends and families, and for society and humanity as a whole, and the benefits will far outweigh the costs. Many people's initial reaction to the idea of treating aging is cautious, or even hostile: we wonder what the consequences of longer lifespans will be for population growth or the environment; if treatments for aging would primarily benefit the rich and powerful; or whether dictators could live forever, imposing endless totalitarianism. However, almost any objection can be answered by turning the question around and replacing it with a simple hypothetical alternative: if we lived in a society where there was no aging, would you invent aging to solve one of these problems?" (p. 11)
The goal: negligible senescence
"what we should aim for is negligible senescence: a risk of death, disability, frailty and illness which doesn't depend on how long ago you were born. Our chronological age would no longer be the defining number by which we live our lives--we would, as individuals and as a civilization, be ageless. That is what a real cure for aging would look like, and it's something we could and should aim for as a species." (p. 12)
- Atul Gawande, Being Mortal p. 46-47 -- all complex systems deteriorate, a cure for senescence isn't possible
- Steele and others--yes it is possible
Friday, November 14, 2025
MODULE 5: A child's right to lenience
| Ethan Crumbley At age 15, killed 4 classmates in Michigan Tried as an adult -- i.e. not in juvenile court Sentenced to life without parole Parents convicted of involuntary manslaughter for buying him gun and ignoring warning signs |
- The precocity problem
- The empirical dependence problem
- Victims would suffer
- Victims would lose years of life
- Victims' families would be devastated
- Murder is illegal
- I've had a say over the law because I have the ability to vote***
- Victims would suffer
- Victims would lose years of life
- Victims' families would be devastated
- Murder is illegal
- --
- Teens are somehow different -- 5 year olds
- Visitors and immigrants can't vote, so are they owed lenience? NO.
- They can't really say "not my law" because they came to this country voluntarily.
- Compare the scenario where you are a guest in a house with a "no shoes in the house" rule. True, you didn't make the rule, but you can't really say "it's not my rule" since you decided to come to the house.
- (52:00)
- Asylum seekers can't vote, so are they owed lenience? YES.
- They're not like the visitors and immigrants because they didn't exactly choose to come to this country.
- So they can say "not my law" and they're owed lenience. (54:08)
- Felons in some states. YES
- If they lose the vote and then commit another crime, they can say "not my law" and they're owed lenience.
- He says felons should not actually lose the right to vote.
- (1:03:25)
- Their parents have a huge influence on them
- So a vote for kids is just an additional vote for their parents
- It's unfair to childless people for people with kids to have an extra vote.
- It's inconsistent with equality for all.
- Developmental View. Has the precocity and empirical dependence problems.
- Disenfranchisement View -- Yaffe supports
- Irrational sympathy View
Wednesday, November 12, 2025
MODULE 5: A child's right to lenience
- Phil 3375 - The Meaning of Life
- The ethics minor
- John Wall: It's discriminatory/involves a double standard that (A) we exclude children from voting based on their lack of competence, but (B) we generally don't exclude old people who lose competence.
- We discussed lots of different responses and you will vote on which is the best!
- No double standard. Technically, there's no double standard because Wall is comparing gaining the right to vote (need competence) and retaining the right to vote (don't need competence).
- Exclude more people. We should continue excluding children and also exclude some older people to avoid discrimination/a double standard.
- Influence is the reason. The reason for for excluding children isn’t competence in the first place; rather, it's the fact that children are under their parents influence, so can't vote independently.
- Protection is the reason. The reason for excluding children isn’t competence in the first place; rather, it's protecting children, keeping them carefree
- Not demeaning. Wrongful discrimination has to be demeaning (Bidadanure). Children aren’t demeaned by not voting, but old people would be demeaned by losing the right to vote.
- Great idea
- Intrigued
- Terrible idea
- no death penalty in any state
- no JLWOP (juvenile life without parole) in over half of states
- not housed with adult prisoners
| Amazon |
- professor at Yale law school and in departments of philosophy and psychology
- "Children deserve leniency in law and the reason is political"
- We will watch 0-16 and 38:55 - 48
Monday, November 10, 2025
MODULE 5: Voting rights
- Approximate generational equality
- Prudentical Lifespan Account + principle of efficiency
- Relational justice: no dominating, demeaning, stigmatizing, marginalizing
- she focuses on young adults, older adults, old adults
- youth job guarantee, youthing politics, mandatory retirement
- not much in book about children
- whether you are a child or an adult, you have a right to life
- whether you are a child or an adult, you have a right to free speech
- whether you are a child or an adult, you have a right to due process
- etc.
- right to vote (18)
- right to make your own medical decisions (18)
- right to make legal and financial decisions (18)
- right to consent to sexual relations (compex)
- right to marry without parental consent (18)
- right to work, complex child labor laws apply to children under 18
- right to drink (21)
- right to drive (16)
- the right to be cared for by a parent or guardian
- right to lenience if they commit a crime
- voting age in US was 21 until 1971, then lowered to 18
- in the UK and elsewhere, it's being lowered to 16
- some argue it should be lowered to 14
- Political scientist David Runciman argues it shouild be lowered to 6
- John Wall is arguing for something else: ageless voting
- Exclusion of children from voting "on grounds of incompetence is discriminatory, as it applies a false double standard to which adults are not held" (Wall)
- "My own argument has been that the most democratic definition of voting competence is neither literacy, knowledge of government processes, nor maturity, but rather the ability to participate in political discourse—something evidently possessed by children of most ages participating, for example, in climate movements, Black Lives Matter marches, gun legislation suits, religious freedom demonstrations, abortion campaigns, queer rights protests, labor unions, children’s parliaments, and a great deal more." (Wall)
"Second, the argument is made that ageless voting would systematically benefit children, adults, societies, and democracies. The idea here is that, compared to the alternatives, democracy works. Put differently, there is a government interest in being pressured by all instead of just a selection of a society’s diverse citizens." (Wall)
Old people: enfranchised regardless of low voting competence
Children: disenfranchised on the basis of low voting incompetence
Voting at age 100
(1) Generally*, old people retain the right to vote despite many developing low voting competence and it is right that they retain the vote.
(2) If old people rightly retain the right to vote despite low voting competence, then children shouldn't be excluded from voting on the basis of low voting competence.
(3) Therefore, children shouldn't be excluded from voting on the basis of low voting competence.
_________________________
Do old people always retain the right to vote regardless of competence?
- Generally, yes, but not always.
- In rare cases people (of any age) can be declared legally incompetent by a court of law, and in some states that will mean they lose their right to vote.
- Good source on legal incompetence and voting is here.
_________________________
- A person would have one vote for themselves plus proxy votes for each of their children
- When the children decide to claim their vote, they vote for themselves
- Extremely young children won't do that!
- Proxy voting defended by JD Vance!
Friday, November 7, 2025
MODULE 5: Justice across ages (5)
Age and politics
Bidadanure chap. 7, "Youth-ing Politics"
- De facto -- exclusion just as a matter of fact
- De jure -- exclusion by law (age requirements for house, senate, president)
- "does not necessarily flout the ideal of fair equality of opportunity" (p. 213) -- the people who are now young will later get their opportunity
- "the absence of young adults in parliaments is a likely barrier to the enactment of intergenerationally just policies" (p. 213) (this is her answer)
- Evidence -- see graphs in this article
- age group quota -- e.g. 20% of the House must be under 35 (mainly this)
- birth cohort/generation quotas -- e.g. 20% of the House must be Gen Z or Millennial
- Substantive benefit -- quotas needed for policies that benefit younger people
- Symbolic benefit -- sends a message that youth are fit for leadership
- Approximate generational equality
- Prudential lifespan account -- differences should be acceptable to someone planning their life from beyond the lifespan -- principle of efficency
- Relational justice -- no stigmatizing, demeaning, dominating, etc.
- Uganda, Kenya, Morocco
- in the US?
- we have age minimums (25 for House, 30 for Senate, 35 for president)
- should we have age maximums? 65? 75? (no Trump vs. Biden)
- term limits
- gender and race inequalities tend to be diachronic (therefore esp. bad)
- birth cohort inequalities tend to be diachronic
- age group inequalities tend to be synchronic (less bad, but may still be unjust)
- approximate equality between birth cohorts/generations (ch. 1, p. 42-47) Oct 31
- Gen Z shouldn't do worse than the previous generation
- Prudential Lifespan Account (PLA) (ch. 2, p. 50-55) Oct 27, Nov 3
- account of how resources should be distributed across age groups
- principle of efficiency
- Relational justice (ch. 3, p. 95-110) Nov 3
- no dominating, disrespecting, demeaning, stigmatizing, marginalizing, humiliating
- workplace (ch. 5, p. 172-178) Nov 3, Nov 5
- politics (ch. 7, p.219-221) Nov 7
Wednesday, November 5, 2025
MODULE 5: Justice and Work
- EU job guarantee -- country implementation plans : help for under 30s only
- Mandatory retirement
- Approximate generational equality
- Prudential Lifespan Account
- lifespan efficiency principle--early interventions have diachronic benefits (most relevant principle)
- Relational justice --no dominating, demeaning, stigmatizing, etc.
- Michael Slote
- Simone DeBeauvoir
- Cicero
- Where legal, where illegal?
- Illegal in the US since 1986
- With exceptions for certain professions (pilots, air traffic controllers, military
- legal in many countries--e.g. Finland
"although mandatory retirement could be justified in principle on grounds of diachronic fairness, the strategy only makes sense if we have good reasons to believe that it can plausibly lead to reduced unemployment rates for the young. For most employment sectors, however, the evidence points in the other direction, and so our default position should be to reject the coercive policy as lacking justification as a way to improve the young's prospects." (p. 178)
- If it did help the young, mandatory retirement would be OK because It would be supported by the Prudential Lifespan Account and lifespan efficiency
- not ruled out by relational justice, not demeaning to old people
- Mandatory retirement "is one of the great moral evils of our times"
- Bidadanure: relational justice--policies should not be demeaning to any age group
- Nussbaum: mandatory retirement IS demeaning! Read p. 61-62
- "my romance with work" .... "I'm talking mainly about work that the worker experiences as meaningful" (p. 62)
- Japanese workers over 100
- great health care system
- applies equally to everyone
- adaptive preferences -- if you can't avoid X, you avoid resenting it by cultivating a preference for X; the preference is "adaptive"
- "employers and employees should be able to contract as they like" (p. 46)
- people should be able to choose employment contracts with mandatory retirement
- currently illegal in the US
- this would boost employment of older workers
- contracts will vary--more desirable employees won't have retirement clauses
- therefore opt-in mandatory retirement will be stigmatizing and demeaning
Monday, November 3, 2025
MODULE 5: Justice Across Ages (3) and (4)
- gender and race inequalities tend to be diachronic (therefore esp. bad)
- birth cohort inequalities tend to be diachronic
- age group inequalities tend to be synchronic (less bad, but may still be unjust)
- approximate equality between birth cohorts/generations (ch. 1, p. 42-47) Oct 31
- Gen Z shouldn't do worse than the previous generation
- Prudential Lifespan Account (PLA) (ch. 2, p. 50-55) Oct 27, Nov 3
- account of how resources should be distributed across age groups
- principle of efficiency
- Relational justice (ch. 3, p. 95-110) Nov 3
- no dominating, disrespecting, demeaning, stigmatizing, marginalizing, humiliating
- workplace (ch. 5, p. 172-178) Nov 3, Nov 5
- politics (ch. 7, p.219-221) Nov 7
- PLA is an account of the distribution of resources over different age groups
- social distribution of resources over age groups should match how I would prudently (out of self-interest) distribute resources over my own lifespan
- lifespan efficiency principle--resources should be allocated so they do the most good diachronically
- Distributive justice--involves how resources are distributed across individuals or groups (e.g. PLA)
- Relational justice--involves relationships between individuals
Unequal marriage--each year husband and wife change who has absolute power in the relationship
Unequal castes--everyone in a society is an A or a B; the As dominate the Bs; after a year they switch roles; etc.
- No problem of distributive justice
- But there's a problem of relational justice --there is non-stop domination!
- Another moral of the story: changing places doesn't solve all problems. Change places in age cases doesn't make just anything ok.
- infantilizing old people -- elderspeak
- infantilizing young adults -- seniorsplaining
- Question: when is differentiating by age benign and when is it wrongful discrimination? (p. 172)
- Wrongful in a moral sense, not a legal sense (age discrimination laws vary and are very weak)
- Bidadanure: differentiating by age is wrongful discrimination when it's demeaning
- Making the under 25's clean the bathrooms
- Asking younger people to help older people with tech issues
- what else?
- prioritizing youth -- the EU job guarantee -- country implementation plans
- mandatory retirement (next time)
- Approximate generational equality
- Prudential lifespan account + lifespan efficiency principle
- Relational justice --no dominating, demeaning, stigmatizing, etc.
Wednesday, October 29, 2025
MODULE 5: Justice Across Ages (2)
Age groups vs. birth cohorts
- 20 year olds--you entered that group and you will leave it
- people born in 2005 -- you will never leave your birth cohort
- adage "children are to be seen and not heard"
- age group inequalities can be temporary, since you leave your age group
- birth cohort inequalities more likely to be diachronic, since you never leave your birth cohort
intergenerational justice requires "each generation, each birth cohort, to make sure the situation of the next generation somehow measured, on a per capita basis is no worse than its own." (p. 42, quoting another author)
"our sex, social background, or ethnic origins are all instances of brute luck and should not be allowed to limit the scope of what one is able to do or have. The generation one is born into is anothe one of thesse circumstances we have no control over." (p. 42)"the downstream generation shouldn't be worse off than the upstream generation" (p. 43)
Most other egalitarians would say
"We should have a presumption of equality when approaching inequalities between younger and older cohorts" (p. 43)
Bidadanure proposal
"I will accept a general principle of approximate equality between birth cohorts as a plausible goal of justice between overlapping generations. The principle ensures that benefits and burdens are shared over time in a way that does not make one general clearly worse off through no fault of its own." (p. 44)
"what we primarily want to ensure is that the downstream generation, which is in part at the mercy of the upstream generation, ends up at least as well off when compared to the previous generation." (p. 45)
"We should make sure that the brute luck of being born twenty years later does not significantly constrict one's opportunities, compared to what they would have been if one had been born twenty years earlier." We should show equal concern for the interests of all persons, regardless of the generation they were born in, because we all count in the same way." (p. 47)
What if your birth cohort is going to do somewhat worse...is that unfair?
_________________________
- Everyone born on Dec 31, 2005, at midnight
- Everyone born on Dec 31, 2005
- Everyone born in 2005
- Everyone born in 1997-2012 (Generation Z)
By Cmglee - Own work, CC BY-SA 4.0, Link
- based on technology, not major events
- radios, TVs, washing machines, birth control, life-saving medicine, computers, internet, smart phones, AI
- Gen Z: smart phones
- Gen Z: the slow life strategy -- longer to grow up, longer to grow old
- Gen Z shouldn't do worse than the previous generations
- We should prevent that from happening or remedy it if it does happen
- covid timing
- fewer entry-level jobs because of AI
- fewer entry-level jobs because of automation
- climate change
- increasing national debt,
- etc

