So four engineers are in a car when it breaks down.
The electrical engineer says “I’ve seen this a thousand times, we just need to replace the alternator”
The mechanical engineer says “No, I’ve seen this ten-thousand times, the fan-belt is worn out”
A civil engineer chirps in “Sorry boys, I’ve seen this a hundred thousand times before, it’s a simple flat tire”
The computer engineer laughs a little and then explains ” You fools, I’ve seen this a million times before, just shut all the windows and re-start it!”