protected boolean computeCell(int col, int row) 
  {
    boolean liveCell = getCell(col, row);
    int neighbours = countNeighbours(col, row);
    boolean nextCell = false;
    if (neighbours < 2) nextCell = false;
    if (liveCell && (neighbours == 2 || neighbours == 3)) nextCell = true;
    if (liveCell && neighbours > 3) nextCell = false;
    if (!liveCell && neighbours == 3) nextCell = true;
    return nextCell;
  }