IT DOESN'T WORK

My last blog was talking about fixing an ice machine -- pointing out the plug should be attached to the wall.  I would like to also add that when your car won't start -- MAKE SURE THE CAR IS IN PARK.  If you can't take the key out of the ignition--MAKE SURE THE CAR IS IN PARK.  Anyone have any other ideas to add?  It may sound like common sense but when a person is frustrated or mad, no one has common sense.