Tuesday assorted links

1. Paul Christiano appointed to USG Head of AI Safety.

2. Further worries about the anti-cavity thing.  I don’t pretend to know the answers here, but this has not been thought through well enough.  And SSC update.

3. Fritz Peterson, RIP, MIE.  Very 1970s.

4. The economic research policymakers actually need.

5. Doris Day: A Guy is a Guy.

6. African nations, ranked by current gdp.