Friday assorted links by Tyler Cowen March 12, 2021 at 12:13 pm 1. Profile of Heidi Williams. 2. NFTs and copyright law. And Balaji on the meme economy. 3. Weak African trust in vaccines? 4. Biden administration skeptical about a carbon border tax the median voter theorem remains underrated. 5. Global twinning rates reach a peak high. 6. Can single cells learn? 7. Will Google disrupt the college degree? Seems OK enough, but a little underwhelming to me.