Post on 01-Jan-2016
description
Today1.Some remaining problems with Paretian ethics
1. Fairness in division
2. Greed
3. Envy
2.Darwinian economics3.Promising from a libertarian, non-economic perspective4.Quasi-contract
2
Fairness in division
Some of you had problems with Paretian ethics One person better off, no one worse
off
4
As it happens, a little green man just gave me $100
5
And he asked me to divide it with you
The ultimatum game
As it happens, a little green man just gave me $100
6
And if you turned down $5 you’re not a Paretian
Fairness in division
The Paretian is indifferent about how the bargaining gains are to be divided
One can’t say “that wasn’t a fair split”
8
18
How does envy come in?
The Paretian is not a “nontruist,“ not an altruist. He doesn’t have preferences as to other
people
19
Varieties of envy
The Paretian is not a “nontruist,“ not an altruist. He doesn’t have preferences as to other
people Which excludes both charity (positive
altruism) and spite (negative altruism)
As it happens, a little green man just gave me $100
23
You “paid to punish”:Was that benign or malicious spite?
Hamilton on the Gene’s Eye ViewThe selfish gene
Bodies are temporary, genes (or their copies) are forever
The gene directs the body
26
Hamilton on the Gene’s Eye ViewThe selfish gene
The gene’s command to the body: Be fruitful and multiply
27
Hamilton on the Gene’s Eye ViewThe selfish gene
The gene’s command to the body: Be fruitful and multiply Maximize the (copies of the) gene Max B (genetic fitness) – C (genetic cost)
28
Hamilton’s insightWhat about relatives?
From the gene’s perspective, promoting genetic success includes kin with whom one shares one’s genes The coefficient of relatedness r
29
What about relatives?
What is r? We share 50% of our genes with our
parents, children and (non-identical) siblings, and 25% with grandchildren
30
Hamilton’s Rule
Gene to Body: be altruistic if rB > C, where
r = the genetic relatedness of the recipient to the actor, B = reproductive benefit gained by the recipient of the altruistic act,
C = reproductive cost to the individual performing the act
31
Altruism and Kinship Selection
Gene to Body: be altruistic if rB > C, where
r = the genetic relatedness of the recipient to the actor, B = reproductive benefit gained by the recipient of the altruistic act,
C = reproductive cost to the individual performing the act
JBS Haldane: I would give my life for two brothers or eight grandchildren
32
Altruism and kinship selection
One imagines r taking a value between 0 and 1 But can you see how r might be greater than
1?
33
37
Cordelia understood this, Lear didn’t
CORDELIA: I love your majestyaccording to my bond; nor more nor less.
Hamilton’s RuleAltruism and kinship selection Benign spite:
Suppose I wish to impose a genetic cost on Y (to whom I am unrelated) in order to confer a genetic benefit on Z (with whom I am related and with whom Y is in competition)
In that case ry – rz is a negative number
39
The limits of kinship selection
Such altruism as we see, amongst men and animals, is importantly explained as a genetic survival instinct that prefers brothers to strangers
40
Strangers vs. Brothers
Unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury: that the Lord thy God may bless thee Deuteronomy 23:20.
41
Hume on promising
42
“Men being naturally selfish, or endow'd only with a confin'd generosity, they are not easily induc'd to
perform any action for the interest of
strangers, except with a view to some
reciprocal advantage.”
What kind of economy would we have in a kinship selection society?
44
Edward Banfield’s “Montegrano”Chiaramonte, Italy
What’s the take-away from Darwinian Economics?
Spite as a barrier to Coasian bargains. You turned down the ultimatum game.
45
What’s the take-away from Darwinian Economics?
Families matter in business A constrained sympathy for non-family
46
What’s the take-away from Darwinian Economics?
Inequality and immobility Is aristocracy the natural state of
society? What happens when a sense of relative
preferences is added to the bequest motive?
How then would you expect the law to look?
48
What’s the take-away from Darwinian Economics?
Inequality and immobility Is aristocracy the natural state of
society? How would you design contract law to
produce an aristocracy?
49
Contract Law from an economic perspective
Contract law as a solution to the trust problem in PD games Promisor makes a credible commitment Promisee trusts
51
52
Relies Doesn’t Rely
PerformsBeneficial Reliance
Loss of Beneficial Reliance
Doesn’t Perform
David
Ebenezer
Credible commitment permits beneficial reliance
Hume on Beneficial Reliance
Your corn is ripe to-day; mine will be so tomorrow. `Tis profitable for us both, that I shou'd labour with you to-day, and that you shou'd aid me to-morrow. I have no kindness for you, and know you have as little for me. I will not, therefore, take any pains upon your account; and shou'd I labour with you upon my own account, in expectation of a return, I know I shou'd be disappointed, and that I shou'd in vain depend upon your gratitude. Here then I leave you to labour alone: You treat me in the same manner. The seasons change; and both of us lose our harvests for want of mutual confidence and security.
53
Are there non-economic explanations for why promises are binding?
Consider the stakes: corporate law, bankruptcy, secured lending, securities law
Family law? Constitutional law?
54
Autonomy Theories
In order that I be as free as possible it is necessary that I should be permitted to bind myself Positive Liberty: Freedom as the
expansion of the domain of alternatives
56
Autonomy Theories
In order that I be as free as possible it is necessary that I should be permitted to bind myself But if I promise I limit my future
autonomy, and why is ex ante autonomy better than ex post autonomy (except from an economic perspective)?
57
Autonomy Theories
Can autonomy theories explain why the institution of contract law should exist? If it’s not there, how can one promise?
58
Consent Theories
Can I bind myself by giving my consent to an act? E.g., I consent to your taking something
which belongs to me
61
Consent Theories
Problem: Do I have the right (or the power) to bind myself with a contractual obligation where the institution of contract law doesn’t exist?
62
Hume on conventions
64
“A promise is not intelligible naturally, nor antecedent to
human conventions.”
Will Theories
Suppose the institution of promising doesn’t exist: Can will theories explain why they ought to exist?
65
Will Theories
Suppose the institution of promising doesn’t exist: Can will theories explain why they ought to exist?
Suppose the institution of promising exists: Can will theories explain why it shouldn’t be abolished?
66
The Humean Account of Promising Assumes that happiness is desirable,
that institutions which promote happiness are morally desirable.
Assumes that people are happier in societies with promissory institutions.
Grounds a duty to perform one’s promises in the duty to support just institutions one has invoked.
67
So the value of promissory institutions may supply a justification for enforcement
But is there another reason to enforce promises?
68
Some vocabulary
Obligation: a moral requirement voluntarily undertaken
Duty: a moral requirement imposed when not voluntarily undertaken
69
Is there a tertium quid?
Obligation: a moral requirement voluntarily undertaken
Duty: a moral requirement imposed when not voluntarily undertaken
What about requirements we ought to have voluntarily undertaken?
70
Natural obligations?
A father knows it to be his duty to take care of his children: But he has also a natural inclination to it. And if no human creature had that inclination, no one cou'd lie under any such obligation. But as there is naturally no inclination to observe promises, distinct from a sense of their obligation; it follows, that fidelity is no natural virtue, and that promises have no force, antecedent to human conventions. David Hume
71
The common law struggles with the basis for enforcement
72
Suppose A sold X goods and X didn’t pay. What remedy? And what should the pleading look like?
Pleadings: Trespass on the case in indebitatus assumpsit
The King to the sheriff &c. as in Trespass to show: for that, whereas the said X heretofore, to wit (date and place) was
indebted to the said A in the sum of £ for divers goods wares and merchandises by the said A before that time sold and delivered to the said X at his special instance and request.
and being so indebted, he the said X in consideration thereof afterwards to wit (date and place aforesaid) undertook and faithfully promised the said A to pay him the said sum of money when he the said X should be thereto afterwards requested.
Yet the said X, not regarding his said promise and undertaking but contriving and fraudulently intending craftily and subtilly to deceive and defraud the said A in this behalf, hath not yet paid the said sum of money or any part thereof to the said A (although oftentimes afterwards requested). But the said X to pay the same or any part thereof hath hitherto wholly refused and still refuses, to the damage of the said A of ___ pounds as it is said. And have you there &c.
73
So the basis for enforcement is unclear in the 16th century B give A promissory notes amounting to £6. A then sells and endorses these over to C. C promises not to sue A if B does not pay. B does not pay C sues A and collects £6 in a Court of Equity A sues C for £6 before Lord Mansfield
74
Moses v. Macferlan2 Burr. 1005 (1760) per Lord Mansfield
"This kind of equitable action, to recover back money, which ought not in justice to be kept, is very beneficial, and therefore much encouraged. It lies for money which, ex aequo et bono, the defendant ought to refund; it lies for money paid by mistake; or upon a consideration which happens to fail; or for money got through imposition, (express or implied) or extortion; or oppression; or an undue advantage taken of the plaintiff's situation, contrary to laws made for the protection of persons under those circumstances. In one word, the gist of this kind of action is, that the defendant, upon the circumstances of the case, is obliged by the ties of natural justice and equity, to refund the money."
75
Bailey v. West
79
Restatement § 19 CONDUCT AS MANIFESTATION OF ASSENT
(1) The manifestation of assent may be made wholly or partly by written or spoken words or by other acts or by failure to act.
(2) The conduct of a party is not effective as a manifestation of his assent unless he intends to engage in the conduct and knows or has reason to know that the other party may infer from his conduct that he assents.
(3) The conduct of a party may manifest assent even though he does not in fact assent.
Bailey v. West
80
Was there an Implied Contract? Restatement § 19(1): What about
“by failure to act”?
Moses v. Macferlan2 Burr. 1005 (1760) per Lord Mansfield
"This kind of equitable action, to recover back money, which ought not in justice to be kept, is very beneficial, and therefore much encouraged. It lies for money which, ex aequo et bono, the defendant ought to refund; it lies for money paid by mistake; or upon a consideration which happens to fail; or for money got through imposition, (express or implied) or extortion; or oppression; or an undue advantage taken of the plaintiff's situation, contrary to laws made for the protection of persons under those circumstances. In one word, the gist of this kind of action is, that the defendant, upon the circumstances of the case, is obliged by the ties of natural justice and equity, to refund the money."
84
Bailey v. West
86
When is quasi-contractual liability imposed? Benefit conferred on defendant by
plaintiff Appreciation by defendant of the benefit Acceptance and retention of benefit by
defendant where it would be inequitable to retain the benefit without payment
Bailey v. West
87
When is quasi-contractual liability imposed? Is consent by the recipient necessary?
Bailey v. West
88
When is quasi-contractual liability imposed? Is consent by the recipient necessary?
You ask me as your agent to trade your horse for a cow. I do so, and get a bribe of $100 which I pocket
Consent and the definition of a benefit?
90
I think orange aluminum siding is neat. When you are on holiday I cover your house with it. A benefit?
What is a benefit?
91
No recovery for “officious” benefits from “volunteers” What does this mean and just how do
you tell?
What is a benefit?
96
In what way is the aluminum siding example unlike the day laborer? The informational problem
How might the informational problem be cured?