Excel Hell II: If the sickness can't be fixed, it must be contained

Microsoft's Steve Ballmer once called open source a cancer. Today's diagnosis points to a different cause

Opinion  Three years ago almost to the day, El Reg reported on how Excel had contributed to pandemic chaos. Some 16,000 cases had vanished between labs and the UK health service due to a combination of file format failures, outdated software, and lack of error messages. Now comes a fresh hell.…