I was running late yesterday and the blog post was already rather long so I left some matters concerning central banks for today. The question we address briefly today is what is the role of central banks in all these trade transactions. Does an export surplus country face an ever increasing money supply as central banks provide the counterparty service to traders who sell in a foreign currency but want their own currency (such as a manufacturer who incurs costs in say Yen but sales revenue in $AUD – as per our example yesterday)? There appears to be confusion on that front as well. So while I am not typically going to write a detailed blog post on a Wednesday, in the interests of continuity, here is Part 2 of the series on trade and currencies.