Tuesday assorted links by Tyler Cowen January 3, 2017 at 12:00 pm in 1. How do sexual practices correlate with cognitive ability? 2. Storming the border fence. And profile of George Borjas. And meeting Decius. 3. Debbie Reynolds performs “If I Had a Hammer.” 4. Couch-moving problems, with moving visuals. 5. Some of the policy plans from Republicans in Congress, some of this was news to me. Here is further coverage from Politico. 6. Why is American subway-building the most expensive in the world?