Once Upon a Dream (Sleeping Beauty song) Once Upon a Dream (Sleeping Beauty song) "Once Upon a Dream" is a song written for the 1959 animated musical fantasy film "Sleeping Beauty" produced by Walt Disney. Its lyrics were written by Jack Lawrence, and its music by Sammy Fain. The song's melody is based on the "Grande valse villageoise" (nicknamed "The Garland Waltz"), from the 1890 ballet "The Sleeping Beauty" by Pyotr Ilyich Tchaikovsky. "Once Upon a Dream" serves as the film's main theme, and as the love theme of Princess Aurora and Prince Philip. It is performed in the film by a chorus as an overture and
Sleeping Beauty problem with imperfect recall was provided first by Michele Piccione and Ariel Rubinstein in their paper: "On the Interpretation of Decision Problems with Imperfect Recall" where the "paradox of the absent minded driver" was first introduced and the Sleeping Beauty problem discussed as Example 5. The name "Sleeping Beauty" was given to the problem by Robert Stalnaker and was first used in extensive discussion in the Usenet newsgroup "rec.puzzles" in 1999. Sleeping Beauty volunteers to undergo the following experiment and is told all of the following details: On Sunday she will be put to sleep. Once or twice, during the experiment,