Revisit the Game of Life while Learning about Extension Methods in C#

using System;
using System.Collections.Generic;
using System.Text;

namespace LifeSimulation.Extensions
{
    static class RandomizeLifeModelExtension
    {
        #region Extension methods

        public static void Randomize(this LifeModelBase model)
        {
            Random rnd = new Random(DateTime.Now.Millisecond);
            model.NeighbourDistance = rnd.Next(1, 5);
            int spawn = rnd.Next(1, 7); //Makes 1 to 6

            model.CellDeathIndicators.Clear();
            for (int i = 0; i < model.GetMaximumNeighbours(); i++)
            {
                if (i != spawn)
                {
                    //if (i > 7 || i == 0)
                    //    model.CellDeathIndicators.Add(i);
                    //else if (rnd.Next(100) < 90)
                    //    model.CellDeathIndicators.Add(i);
                    if (rnd.Next(100) < 10)
                        model.CellDeathIndicators.Add(i);
                }

            }
            model.CellSpawnIndicators.Clear();
            model.CellSpawnIndicators.Add(spawn);
            model.MaximumAge = rnd.Next(20, 200);
        }

        #endregion
    }
}