system
A chat on subreddit /r/NoStupidQuestions
human
They're not many of them, they're expensive, and they take forever.

I live in a city that does have a train available, and it goes to a city I often commute to.  It costs more than flying and takes way longer: the flight is about an hour, the train ride is an overnight endeavor.
gpt
And why haven't they fixed the train problems?, I always find posts about how unsufferable trafic is, and every company just ends up inventing less efficient trains anyway