Why are iron nails attracted to magnets but not each other?

Answer: The poles are at the ends and the the poles are stronger and more energetic. One of the properties of magnetic flux - lines force is that they prefer paths of least resistance. The lines of force leave and enter at poles and they travel inside to complete the loop. They form closedloops. Now when they leave or enter they are in the path most resistance namely air. When iron filings are thrown, they attract so as to have a path of least resistance namely iron metal. Inside the body of the magnet, the lines of force are peacefully lying in the iron metal which is the path of least resistance and no need to further have the because