"It makes it far harder to see the major (and most important) feature of the first graph" Not if one has learned to read logarithmic graphs. It took me a seme

"It makes it far harder to see the major (and most important) feature of the first graph" Not if one has learned to read logarithmic graphs. It took me a semester of solid state electronics class (full of log graphs) to get the hang of it, but once you're use to the idea that a straight rising line is exponential, it's easy to see what you say is the most important feature: rapid currency devaluation after 1945. In fact, because it's a log graph, you can tell that it's rising faster than base 10 exponential, because it's still a curve and not a straight line. In addition, because it's a log graph, the large values on the right doesn't dwarf the smaller values on the left. Now, you can see details of what the price change was like locally in time across the board. I'd say there's some useful information there in a log graph. Now if you were saying that log graphs would be dubious to use for the general public, then maybe you'd have something there.