Claudio Borio is the head of the Monetary and Economic Department at the Bank for International Settlements, or BIS. Claudio is also a returning guest to the podcast, and he rejoins Macro Musings to talk about central bank operating systems and the challenge of large balance sheets at central banks. David and Claudio also discuss the basics and uniqueness of the scarce reserve system, the arguments in favor of an abundant reserve system, the politics of large central bank balance sheets, the possibility of a tiered reserve system, and a lot more.   Transcript for this week’s episode.   Claudio’s BIS profile   David Beckworth’s Twitter: @DavidBeckworth Follow us on Twitter: @Macro_Musings   Join the Macro Musings mailing list! Check out our new Macro Musings merch!   Related Links:   *Getting Up From the Floor* by Claudio Borio   *Why Central Banks Should (but Might Not) Keep the Market Flooded With Money* by Jon Sindreu   *Corridor, Floor, Other: Are Operating Frameworks Fit for the Future?* by Daniel Hinge