I want to know the answer to the following question:
What group did Hayek form with three other people?
All the background I'm provided with is that "Hayek had made contact with many at the U. of Chicago in the 1940s, with Hayek's The Road to Serfdom playing a seminal role in transforming how Milton Friedman and others understood how society works.". Is that enough to answer the question?
Answer: no