Which of the following is a legal requirement for boat operation?
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operators must use every available means to determine the risk of a collision
une carte en el de
operators must carry an orange distress flag at all times when boating
navigation lights should only be used if a collision is imminent
passengers are responsible for keeping a lookout while the operator steers

What is implied in this sentence from mark twain's "the ? 1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.