You don't have to fly in order to go from one city to anther, driving can get you there too. But it takes 10 hours to drive rather than 2 hours to fly!
You don't have to have a computer to store your files. Shoe boxes can store all your records, but it takes 1000 shoe boxes than 1 PC!
You don't have to have Eazy Fix, you can fix Windows PC problems using whatever method you have, but it takes hours than seconds!