Computers are becoming error free.

when I first began working, the computer filled a huge room and cards had to be punched by key punch operators. If there were any errors on the cards (which was highly likely due to the keypad and method of entering information) the program would not run and the cards that contained the error(s) were extracted and visually scanned to see what the error was to cause the program not to work. Now, with all the ready to go programs available to office workers, documents can be prepared error free! and even if a error is made, it can be corrected easily without any clue of a mistake being made.