void insertPerson(object o)
{
int pos = people.IndexOf((Person)o);
Person p = new Person { FirstName = "Catherine", LastName = "Connerly", Age = 50 };
people.Insert(pos, p);
}
void addPerson(object o)
{
Person p = new Person { FirstName = "James", LastName = "Wood", Age = 11 };
people.Add(p);
}
