I don’t know about others, but I’m interested in the large cogs that move the world. Maybe it’s because I’m looking for problems, or wondering how the status q

I don’t know about others, but I’m interested in the large cogs that move the world. Maybe it’s because I’m looking for problems, or wondering how the status quo came to be. For example, why does it cost $30 for a wire transfer? And why is it only processed on business days. That led to me wonder how banking and ACHs work.