Role of government
Criminal justice system:
* rule of law - disincentivizes harmful behaviour and protects property rights
Provides a stable trading environment:
* rule of law - enables enforcement of contracts
* macroeconomic policy - setitng interest rates and making spending decisions
Provides certain goods and services
* national defence
* education
* healthcare
* infrastructure
* utilities
Makes regulations (rules enforced by law)
* labour law to protect workers and provide benefits
* environment regulations to reduce pollution
* financial regulation to reduce fraud and protect investors
* Competition law to maintain competition in markets and to reduce unfair trading practices
Taxes and subsidies
* required to find government policies, and can be used to reduce unwanted behaviour
*subsidies given to encourage firms or individuals to do beneficial things
Redistribute wealth and provide for the underprivileged
* progressive tax system
* benefits from redistribution, costs: administration, loss to those taxed, incentives
Economically rational agent
selfishly maximize own anticipated utility
Social welfare
Maximizing the sum of everyone’s utility
Surplus
The difference between the utility of having the good and the utility of transaction price
Free market
transactions are voluntary
Pareto efficiency
Resources are allocated so that it is impossible to make one person better off without making at least one other person worse off
Outcome is not pareto-efficient when there is:
* imperfect competition
* information provlems
* externalities
* public goods
Can still redistrivute the surplus if pareto-efficient
Externalities
indirect costs or benefits from an economic activity that affect a third party not involved in the transaction
Maximizing social welfare
Institutions
Policy
a set of rules, created and enforced by a governing body.
Normative analysis
what policy makers should do, sometimes different from what policy makers actially do.
cost benefit analysis
We want to design rules that are both “fair” and “efficient”. This will mean making a trade-off between gaining additional social welfare against the costs of implrmeneting polocy
incentives
link agents utility to some action or outcome
opportunity cost
the utility an agent gets by doing (the best) something else with their time/effort
Willingness-to-pay
the total utility an agent gets from a good, expressed in dollars
transfer seeking
any activity that tries to increase one’s share of wealth without creating new wealth
perfect competition
imperfect competition
monopoly
moral hazard
Team’s problem
If everyone was marked separately, they’d have an incentive to work hard. But if there was on person providing a positive externality by working hard, there is an incentive to free-ride on your peers
transfer seeking
The act of seeking to transfer wealth or resources to oneself, without creating new wealth for society
Disaster relief economics
The main point of Paul Krugman’s “Disaster Relief Economics” (2011) is that it’s bad economics to demand immediate spending cuts to “offset” disaster relief.
Krugman argues:
Government spending should focus on marginal benefits and costs — after a disaster, the marginal benefit of relief spending rises sharply, so shifting resources toward it makes sense.
However, trying to fully offset that spending elsewhere right away (by cutting other programs) is misguided because it ignores that the government can borrow temporarily.
Disasters are temporary events, and it’s economically sound to finance them with a short-term increase in the deficit, not by slashing other areas of spending in the moment.
In short: Krugman’s thesis → Disaster relief shouldn’t be offset by immediate spending cuts; it should be paid for over time through future adjustments, since the costs and benefits are temporary and the government can borrow responsibly.
opportunity cost
the value of the best foregone alternative. The OC of X is the amount of Y given up to get X, where Y is the best alternative to C.
exclude sunk costs
include costs for which there is no observed outlay
OC of broadway show (98/per)vs. movie (14/per) (chosing show) = 98/14 -> one broadway show is the OC of 7 movies