It is believed that Homo habilis were the first hominids to create and use tools. These creatures lived in Africa about 1.5 million years ago. Homo habilis probably lived alongside Australopithecus. However, their larger bodies and brains would have given them a clear advantage.
Once in a century a man may be ruined or made insufferable by praise. But surely once in a minute something generous dies for want of it.
Playing cards were issued to British pilots in WW II. If captured, they could be soaked in water and unfolded to reveal a map for escape.