Once there was a fine warren on the edge of a wood, overlooking the meadows of a farm. It was big, full of rabbits. Then one day the white blindness came and the rabbits fell sick and died. But a few survived, as they always do. The warren became almost empty. One day the farmer thought, ‘I could increase those rabbits: make them part of my farm—their meat, their skins. Why should I bother to keep rabbits in hutches?