Most software expect an error of some sort (e.g. file not found, permissions) and do nothing with it except print it. This would be sane behavior with a NFS tim

Most software expect an error of some sort (e.g. file not found, permissions) and do nothing with it except print it. This would be sane behavior with a NFS timeout. Let the user retry rather than hanging forever. Consider a startup script that hangs forever. Better it fail than hang. Or ls hanging forever when instead the filesystem could fail the operation after 30s.