Certainty

There are more people alive now than have ever lived
 I read that somewhere and instantly thought it impossible but if it were to be true
 I wonder that, if we keep living this fast, no-one will have time to die
 I've met people whose lovers died in war and I've wondered what this helplessness could be like
 one minute there's a whole life entwined with yours and the next, just a space and scattered clues
 When I watch old films in which animals appear
 I get sad because those animals are certainly dead now
 And that certainty prompts my private epitaph and I have to say it out loud
 "That dog is dead, that cat is dead, that horse is dead..."