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Public Economics Lectures Part 1: Introduction

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Rothschild-Stiglitz: Second Best Solution<br />

Now suppose govt. comes in and mandates pooled insurance at<br />

actuarial rate. Everyone gets an income of<br />

( 9 3<br />

10 4 + 1 10<br />

1<br />

4 )100 = 7 100 = 70.<br />

10<br />

H benefits from this: now pooling with less risky people<br />

But L benefits too! Expected utility is √ 70 > 8.2<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 23 / 207

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