Just in case you (or someone else) don't know why you are being downvoted, I'll give you a few reasons: - Banks have to put these double-checking and reporting

Just in case you (or someone else) don't know why you are being downvoted, I'll give you a few reasons: - Banks have to put these double-checking and reporting systems in place because the law mandates them to. No amount of ACID compliance in your database is freeing you from that. - These requirements are not stupid either: assuming you had a perfect system with perfect ACID compliance and 0 bugs ever (which we all know is impossible), a random hardware failure (or cosmic ray) can flip a bit somewhere and you are screwed. - Your comment reads as extremely condescending, which is never good to get your point across. - Not only that, but you dismissed the work of some of the best people money can buy in two sentences with 0 rationale. Next time you think you know better than an entire extremely well funded industry, think again, and again, and again. If you are still convinced you know better, please open shop because if you are right you'll not just make yourself the next self-made billionaire, but also probably improve our lives in the process.