«The ease with which shear bands form in this palladium - based glass generates highly serrated cracks that resemble interlocking gear teeth and provide crack - tip blunting and shielding to limit the opening and closing of cracks.
While you really do need a great serrated blade for bread, serrated knives quickly lose out with denser foods and when a serrated blade gets dull, the tools needed to sharpen them are highly specialized and difficult to use.