When I saw Nikolaus Geyrhalter’s superb documentary Homo Sapiens, I reflected upon the legacy we, Homo sapiens, would leave behind. Our legacy isn’t as magnificent as we would often believe, considering us the crowning glory of God’s creation. Even though ancient civilisations have left us with remarkable structures of all kinds, they cannot outweigh the (concrete) masses of shopping centres, amusement parks, houses that crumble after fifty . . .