Ignoring everything else about the article, the graph of price over time is total crap. If you want to show a change in the real price of something,
1. show the full price range in the Y axis. I'll have none of this clipping off the bottom half of the scale nonsene, please.
2. use a logarithmic scale so a unit of length always equals a percentage change.
3. adjust the price data for inflation. I don't want to compare apples to oranges, bananas, nectarines, and grapes! Give me a single value to consider. Ad 2002 dollar is a different beast from a 2018 dollar.
1. show the full price range in the Y axis. I'll have none of this clipping off the bottom half of the scale nonsene, please.
2. use a logarithmic scale so a unit of length always equals a percentage change.
3. adjust the price data for inflation. I don't want to compare apples to oranges, bananas, nectarines, and grapes! Give me a single value to consider. Ad 2002 dollar is a different beast from a 2018 dollar.
Death to bad charts!