I notice that you mentioned that you'd added the world factbook data to the sandbox sometime ago, but it hasn't made it into the nonsandbox version. Are you still working on it?
World Factbook Data for Countries
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Ήο Κυβερνήτικος! The Factbook data exposed a whole raft of interesting issues with which we’ve been dealing before returning to it. This includes support for units of measurements in properties, time-variant values, and just some general user interface design issues (as adding three dozen properties really changes the look of a page). Stay tuned, though!
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Excellent news, I was just worried that it had gone quiet.
I can see that particularly for countries, there could be almost unending statistics which would make the page very busy. Different levels of view seem like a good way of approaching this. Maybe each user could specify which properties they'd like to see on a page, and there could be groups of properties defined as well, so by default only the "overview" properties would be shown.
As I was making various edits, I thought it would be nice when adding a value to be able to also indicate the source of the data, (and possibly to accomodate multiple values from different sources). e.g. the total area of a country is not as well defined as you might think and there are a variety of different sources which give different values for the areas. This is common for many properties, and it'd be nice for any property to be able to say where the data is from.
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