The high IQ society, Mensa, was founded in the UK in 1946, but it was not until 13 years later that it hit 600 members. However, after that, the interest in Mensa exploded with the organization needing a database of intellectuals to support their activities.
The 600 drinking clubs of England were founded in the early 18th century, and while they eventually became infamous for their debauchery, they were initially a way for expats to meet others from their home country. The clubs' membership reached 600 in 1959, and from there it quickly gained mainstream popularity.
The speaker defends an organization's need for money to run and announces their new podcast about the relationship between our brains and our experiences.