I put the problem to Anscombe, who shook his head and looked at his foot.

Then he produced a lucky penny which he carried in his pocket and said-- "Let us invoke the Fates.

Heads we run like heroes; tails we stay here like heroes," and he spun the penny, while I stared at him open-mouthed and not without admiration.
Never, I thought to myself, had this primitive method of cutting a gordian knot been resorted to in such strange and urgent circumstances.
"Heads it is!" he said coolly.

"Now, my boy, do you run and I'll crawl after you.

If I don't arrive, you know my people's address, and I bequeath to you all my African belongings in memory of a most pleasant trip." "Don't play the fool," I replied sternly.