Elephants, it turns out, are surprisingly stealthy. As the sunlight fades, other species declare their presence. Throngs of zebras and wildebeests thunder by in the distance, trailing dust clouds. Cape buffalo snort and raise their horns and position themselves in front of their young. Giraffes stare over treetops, their huge brown eyes blinking, then lope away in seeming slow motion. But no elephants.
The force of the guinea you have in your pocket depends wholly on the default of a guinea in your neighbour's pocket. If he did not want it, it would be of no use to you.