If the Earth was edible, and was the sole source of food for its inhabitents, how long would it take for people to eat themselves off the planet?
Assuming a biblical creation story (a man and a woman), after how many years of humans dwelling on earth would the earth be eaten to the ground?
Assume the earth starts off looking the same as it does today, with the exception being that the land is edible food, and all ocean water is drinkable.
Assume that the volume of dirt one would require for a meal equals the volume of food normally consumed by humans in real life per meal.
Assume non-ration meals (3 full meals a day.)
Assume that the waste isn't edible and piles up.
Assume oxygen is provided through the soil.
Assume that the whole earth is edible (not just the crust.)