> Speaking about computers. Have you noticed that the computer is ‘the perfect guilty’.
I explain: Some eons ago, before computers rule the earth, people had to take their responsibilities and, sometimes,
even apologize for a blunder. Now when the bank loses your money, when you expend hours in a file or when your
doctor forgets your appointment. They all put the blame on the computer and even we tend to accept this explanation as
a satisfactory one.
If computers could complain ...

Indeed. I believe the word you are searching for is 'scapegoat'. What you are saying above is similar to the old term 'the cheque is in the post' which means that it is out of our hands now so don't come blaming us if it doesn't arrive.

Some people may accept a 'computer-down' explanation as satisfactory but you can only fool some of the people some of the time...

Besides a bad workman blames his tools. Next time a bankclerk says they can't process your cheque beacuse of a computer malfunction, be clever and ask them what down-time should you expect? The blank expression on their faces should be priceless! Bonus marks if they try to bluff their way and give a meaningful answer!!!