The paramilitary Rapid Support Forces have at last taken El Fasher, the capital of Darfur. Reported atrocities are sharply rising, in a chilling echo of what happened in the region two decades ago. Artificial intelligence is narrowing the information asymmetry between sellers and buyers, spelling an end to the “rip-off economy”. And why the literary genre of questionnaires is fading.Get a world of insights by subscribing to Economist Podcasts+. For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.

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