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Dr. Adam Stein @astein.bsky.social

How do you make pie charts worse? By making them hexagons instead! Sorry EPRI, great report, but this is a chart crime.

Figure ES-1. U.S. Energy Wallet: Break-out by State and Fuel in 2024.
aug 20, 2025, 3:37 pm • 8 1

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Dr. Adam Stein @astein.bsky.social

Pie charts are already hard for people to interpret correctly. Proportional interpretation depends on position in the circle. By using hexagons the area of the fuel source is no longer related to the value. All you can really see is that gasoline dominates expenditures.

aug 20, 2025, 3:37 pm • 0 0 • view
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Dr. Adam Stein @astein.bsky.social

Additionally, the size of the hexagon used to represent total household expenditures is not easily discernible from one state to another. Only the number in the center helps, which indicates this should be a table.

aug 20, 2025, 3:37 pm • 0 0 • view
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Dr. Adam Stein @astein.bsky.social

You can find the otherwise useful report here! energywallet.epri.com

aug 20, 2025, 3:37 pm • 2 0 • view
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eeeeeeeeeee @christbot.bsky.social

It’s intuitive enough to do the job. Nobody takes the time to measure the pie charts. It’s just a metaphor.

aug 20, 2025, 3:45 pm • 0 0 • view
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eeeeeeeeeee @christbot.bsky.social

No… it’s easy as pie. Pie charts are good.

aug 20, 2025, 3:44 pm • 0 0 • view
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John Bistline @bistline.bsky.social

FWIW, there are also bar charts in the report. But I'm reminded of the Amanda Cox quote: "There's a strand of the data viz world that argues that everything could be a bar chart. That's possibly true but also possibly a world without joy."

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aug 20, 2025, 4:03 pm • 2 0 • view
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eeeeeeeeeee @christbot.bsky.social

It’s so bad I love it!

aug 20, 2025, 3:42 pm • 0 0 • view
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eeeeeeeeeee @christbot.bsky.social

It really makes actual sense tho.

aug 20, 2025, 3:43 pm • 0 0 • view