The OP is writing about transactions. Of course distributed systems can be built, of course there are mechanisms to reach consensus between nodes. However suc

The OP is writing about transactions. Of course distributed systems can be built, of course there are mechanisms to reach consensus between nodes. However such a system needs to be designed from ground up to cope with partitioning. And one MUST accept that there will be conflicts in the system - and that some of them won't be resolvable automatically or in timely fashion. Its a trade off that cannot be avoided. And I have sat in more than one meeting where customers and my bosses demanded that I violate laws of physics and provide them with a distributed solution that will have no errors whatsoever. Edit: And work faster than a single node solution to top it off.