Every once in a while in East Africa, you stumble across a seemingly-absurd sign. They're usually in cities, but I saw one in a village this week.
In a village near Mbarara (Uganda), there is something called "goat technology".
It's brilliant: villagers transform this...
... into this:
At night, goats are herded up some steps to this shoulder-level platform. In the morning, the technological wonder's owner (left) flicks a broom underneath and collects fresh fertilizer.