If you think about what we normally take as giving life a lot of its meaning -- music, humor, eroticism, spirituality, aesthetics, nurturing and caring, gossip, chatting with people -- all of these, very likely, are enabled by a special circuitry that we humans have, but that you could have another intelligent life form that lacks these.
Si piensas en lo que normalmente significa darle a la vida mucho de su significado: música, humor, erotismo, espiritualidad, estéticas, importancia, cuidado, rumores, charlar con la gente. Todo esto es posible por un circuito especial que tenemos los humanos pero podrías tener otra forma de vida inteligente que carezca de éstos.