What consumers do. Within an economy, this can be broken down into private and public consumption (see public spending). The more resources a society consumes, the less it has to save or invest, although, paradoxically, higher consumption may encourage higher investment. The life-cycle hypothesis suggests that at certain stages of life individuals are more likely to be saving than consuming, and at other stages they are more likely to be heavy consumers. Some economists argue that consumption taxes are a more efficient form of taxation than taxes on wealth, capital, property or income.