视频选集 01_4-1-1-externalities-definition 02_4-1-2-externalities-allocative-efficiency-refresher 03_4-1-3-negative-externalities-implications-for-efficiency 04_4-1-4-positive-externalities-implications-for-efficiency 05_4-1-5-the-coase-theorem 06_4-1-6-interalizing-a-negative-externality-via-a-per-unit-tax 07_4-1-7-interalizing-a-positive-externality-via-a-per-unit-subsidy 01_4-2-1-externalities-a-numerical-example 02_4-2-2-interalizing-a-negative-externality-via-tax-a-numerical-example 03_4-2-3-government-intervention-in-the-case-of-externalities 04_4-2-4-externality-conclusion 01_4-3-1-pure-public-goods-nonexcludable-and-nonrival 02_4-3-2-examples-of-different-types-of-goods 03_4-3-3-implications-of-nonexcludability 04_4-3-4-free-riding 05_4-3-5-implications-of-nonrivalness 01_4-4-1-the-role-of-the-government-in-providing-public-goods 02_4-4-2-provision-of-public-good-by-the-government 03_4-4-3-free-riding-as-a-prisoners-dilemma 04_4-4-4-public-goods-conclusion 01_5-1-1-adverse-selection 02_5-1-2-adverse-selection-consequences-and-solutions 03_5-1-3-adverse-selection-a-numerical-example 04_5-1-4-adverse-selection-a-numerical-example-with-private-in 05_5-1-5-adverse-selection-possible-solutions 06_5-1-6-moral-hazard 07_5-1-7-moral-hazard-consequences-and-solutions 01_5-2-1-inequality 02_5-2-2-poverty 03_5-2-3-income-redistribution