Meanwhile, this was posted here on HN just yesterday: https://news.ycombinator.com/item?id=41639763 https://news.ycombinator.com/item?id=41639763 Also, state

Meanwhile, this was posted here on HN just yesterday: https://news.ycombinator.com/item?id=41639763 https://news.ycombinator.com/item?id=41639763 Also, state machines are very good at storing state transitions, AKA events. So I'm not sure what the author is going on about saying that you can't reconstruct how you got into a particular state. People do it all the time. As far as scalability is concerned, you can't push it out to the client because the client has no legal authority. Payments, which is part of the banking system, relies on centralized services and processes having legal authority and authorization to make withdraws and deposits. Since someone having 10 years of experience in payments should know this stuff, I'm thinking maybe the author poorly conveyed their thoughts on the matter.