system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the meaning behind the "Horse and Sparrow theory?

I know its used synonymously for "trickle down" economics but what is the actual story involving the horse and sparrow?
gpt
It's not so much as a synonym as a criticism. The "story" is that if you feed enough oats to a horse, it's crap will contain surplus oats (oats that passed through the horse's digestive track) and the sparrow can get its oats from the horse shit.

The criticism of trickle down economics is two-fold. First and foremost, it illustrates that this is a rather inefficient method of delivering oats to sparrows and, second, they still have to dig through shit to get them.