system
Given the following post, respond as if you're commenting on Reddit:
human
[Jack and the Beanstalk] What was the motivation of the old man who traded Jack the magic beans for a milk cow that didn't produce milk any more?

Was he desperate and just needed a quick meal? Was he trying to con Jack?  Was it an elaborate setup to kill the giant?  Did he even know the power of the beans?
gpt
He probably had a magic bean plant but was too old to climb the stalk himself, so he traded some of the bean for a cow. Yeah, it didn't give milk but that might have been a nutrition problem. A poor family might not feed the cow enough to give milk. The cow could start producing again if fed properly. If not, well you got steaks and ribs for the winter.