ammi, aattukkal, ural-ulakai (plain grinding stone, granite dosa/idli grinder, stone pounder) are any day better than modern multi-purpose grinders/food processors. Finely ground-burned rice husk with added salt is better than tooth paste; brick better than lufa and sponge. Wood burning chulla better than ceramic grill. Bark is better than chiffon. The list is endless.