Jim Savage writes:

Not sure if you knew, but Stan was used in the Australian Productivity Commission’s review of the Australian retirement savings system. Their review will likely affect the regulation on $2 trillion of retirement savings, possibly saving Australians around $20-50 billion in fees over the next decade.

OK, we can now officially say that Stan, as an open-source software, has recouped its societal investment.

Tomorrow’s post: What’s the evidence on the effectiveness of psychotherapy?