> If I expressed the Canadian CPI in USD that would look like a 30% deflation. Now we're up at 0.79 USD per CAD one year later. It's pretty volatile. If you w

> If I expressed the Canadian CPI in USD that would look like a 30% deflation. Now we're up at 0.79 USD per CAD one year later. It's pretty volatile. If you wanted to convert the numbers, over decadal timescales you'd probably want to use purchasing power parity (PPP, or $INT) figures. That tends to be less volatile, and since it reflects the approximate cost of goods and services it's a better intuitive like-for-like match. > I was just looking for a nice clean public domain vector art image of a prop plane Given the topic, I'm a bit disappointed you couldn't get an image of a Japanese Zero. Incidentally, if you're still working on "Inflation, part 2", one way to close the central bank reaction function is to assume a Taylor Rule (https://en.wikipedia.org/wiki/Taylor_rule https://en.wikipedia.org/wiki/Taylor_rule). I've long thought that the Taylor Rule should be interpreted as a kind of PID controller, save that nobody in economics seems to relate the "assumed equilibrium real interest rate" to an integral term.