An ecological footprint is a construct that is useful
for a person living in a developed nation to consider to make better choices when using global food and energy resources.
for a person living in a developing country to see how much of the world's resources are left for him/hr.
in converting human foods' meat biomass to plant biomass.
in making predictions about the global carrying capacity of humans.
in determining which nations produce the least amount of carbon dioxide from the burning of fossil fuels.