"thats true but listening to engine diagnosing problems?? sounds pretty far fetched to me "
Acoustic based aircraft engine diagnostic systems exist. This means that the computer compares the sound of an engine with an healthy engine and pinpoints the fault. Grinding noises, rubbing noises, turbulent airflows, fuel spray patterens are all hints.
If a computer which has only some millions of options to handle can do this, then a human brain which has no bounds in number to judge a parameter can sure do this.
Sometimes sit in your garden with eyes closed for an hour and just concentrate on your hearing. You will discover a new world in your own house.