Saturday assorted links

1. What is up in Eritrea?

2. Noah interviews Vitalik.

3. Economist John Friedman on education and mobility (NYT).

4. Arcadia, a new group house in Berkeley.

5. Why is China so obsessed with food security?

6. The wisdom of John Arnold, on student loans: “Interestingly, the government student loan program originally guaranteed only 80% of principal. In 1976 it was increased to 100% plus interest, thereby eliminating any shared risk and creating the moral hazard that exists today.”