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Michael Nielsen has a beautiful new essay on moral imagination: the ability humans have to 'develop and transmit new notions of good action, indeed, even new kinds of good'.
As examples, he gives:
* Hammurabi's creation of a code of laws (in 1754 BCE) and his justification of his rule not in terms of divine or hereditary right, but by the delivery of justice to his citizens.
* St Gregory of Nyssa's...
You could probably post a half-dozen beer-sheds encircling a village, and each batch of brew is moved on a dolly to a spot somewhat further from the village-center, such that you steadily enlarge a de-mosquitoed zone.
Also worth considering: though you get a similar CO2 trap with baking soda, that would be a COST of a few dollars a week, only yielding a small amount of chicken-feed and avoiding malaria and bites in general. Instead, brewing beer (or fruit wine into vinegar) generates a revenue from inputs, WHILE eliminating malaria. This is also categorically better than Bed Nets, because those only protect you in BED; the mosquitoes are still flying around everywhere!