Yah but banking sucks as an eventual consistency problem. Sure there are processes to go back and solve conflicts, but they suck too.
Part of the reason we can't transfer money instantly between two accounts in the USA is due to sorting out eventual consistency. Federal guidelines on transfer intentionally make it a slow process so the manual processes can catch up.
> Part of the reason we can't transfer money instantly between two accounts in the USA is due to sorting out eventual consistency.
Yeah, but that's because everything is a case of eventual consistency. Causality itself is limited to the speed of light, and "instantly" is impossible. The only question is whether you want to block/wait, or gloss over it with eventual-tricks.
Just look at online FPS games! Even with some of the best consumer-grade communication links and high expectations for each node, it's impossible to provide actual "instant" behavior, and all modern games contain huge reams of code dedicated to maintaining an eventually-consistent environment.
Part of the reason we can't transfer money instantly between two accounts in the USA is due to sorting out eventual consistency. Federal guidelines on transfer intentionally make it a slow process so the manual processes can catch up.