Just for interest, in the car industry we had a highly technical measure for reliability in service, it was known as "TGW". The benchmark for good cars at the time was low single figure numbers per hundred vehicles, the likes of Honda and Lexus were in the 5-8 bracket, other more troublesome makes could be in three figure territory (i.e. every car had at least one TGW).
What did TGW stand for?
"Things gone wrong"
Seems a very crude description but in the real world it's what the customer experiences, something has gone wrong. It doesn't matter much to them w