It is better to light one candle than curse the darkness.
—Motto of the Christopher Society
(yes, but first one needs to have a match.)
On one of the bookshelves next to my desk I have an old, well-thumbed 1970s textbook on computer programming which has, as one of its homework problems, the following interesting assignment:
A pipe smoker has two booklets of matches in his pocket, each containing 40 matches initially. Whenever a match is required he picks one of the booklets at random, removing one match. Write ...