Answer:
the advantages are its more accurate,more quicker and it saves time and a lot of money however the dis-advantages are that it can not delet a line once the machine has started.
I want to believe the first writer was trying to say was once the job is in progress,then that's it. they going back will be too late if the damage has been done.In large-scale production, the results are consistent (always the same).Enables very high accuracy levels in large-scale production.Usually speedsup production of low-volume products.