According to Goodland and Anhang, however, livestock (like automobiles) are a “human invention and convenience” and the large numbers (and subsequent emissions) only exist to satisfy consumer demands.
Ayon sa Goodland at Anhang, gayunpaman, baka (tulad ng sasakyan) ay isang "pantao imbento at convenience "at ang malaking bilang (at kasunod emissions) umiiral lamang upang masiyahan ang pangangailangan ng mga mamimili.