Looking for a Sci-fi short story that I read once and would like to find again?
It was about a spaceship where the captain is unusually polite in his verbal commands to the ship's AI, always saying "please" and "thank you." The crew records the captain's voice saying the codes to control the ship, then mutiny and kill him, and only find out after he's dead that the "please" and "thank you" were also part of the command codes. Thus they are doomed to drift in space in a ship they can't control.
This question was reposted in Short story about a mutiny on a spaceship and a polite captain. I answered it there, but for the record I'll post here as well then we can delete one of the answers if/when one of the questions is closed as a duplicate.
Anyhow the story is Mutiny by Malcolm Hulke and it has appeared only in two little known anthologies Galactic Adventures and Purnell's Book of Adventures in Space (the latter has been mentioned in Who wrote "The Monsters" short story published by Purnell. They are the same book, but released under two different titles).
The only trace I can find of the story in the Google Books page on Galactic Adventures, though that page is only partially complete. Only fragmentary extracts of the book text are available from Google Books, but the few extracts available make it fairly clear this is the story in question. For example here we find:
... computer only followed instructions that began with the captain's voice saying please. That's why he was always polite to the computer. And we just erased all his voice-prints from the tape. He's fooled us.
