Once I was in a hurry and got directions from Google and only wrote down street names and which way I needed to turn. Turns out that the actual street names were different than Google's. Since I didn't write down the distances between turns I had no clue on how far I needed to travel on each segment. Major mistakes. I stopped at an intersection in the middle of nowhere waiting for a car but gave up after 45 minutes. I eventually found my way to the destination but it required some "bonus" miles.