public void Returns_Furthest_Two_For_Four_People()
{
var list = new List<Person>() { person02_2ndOldest, person03_2ndYoungest, person04_Youngest, person01_Oldest };
var ageComparer = new AgeComparer(list);
var result = ageComparer.FindFurthest();
Assert.Same(person01_Oldest, result.Person1);
Assert.Same(person04_Youngest, result.Person2);
}
