You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Carlos Scheidegger @scheidegger makes a good point. GDP is a problematic measure. It does not reflect existing assets and their distribution. It's a proxy measures for economic activity, hence it can go up during war and after disasters.
Yes. I made the same point. It's a question of whether it's better than status quo, not whether it's perfect.
In fact, I made those points in the tweet you replied to. Did you read the tweet?
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
