Braid's rewind mechanic doesn't just let you undo mistakes—it systematizes the fantasy that obsessive re-examination and control can retroactively justify any pursuit, no matter how destructive.
The puzzle design enforces this logic: you rewind, you try again, you adjust your understanding of what you did, and eventually you accept a solution you would have rejected on the first pass.
In World 2, you encounter the time-manipulation door where actions only move forward when you move backward. The puzzle requires you to accept that the direction of your agency doesn't matter—only the outcome.
By World 4, the game introduces the "shadow Tim," a version of your character that mirrors your actions in reverse, and you watch yourself betray yourself while solving it. The game makes this elegant. It makes it feel inevitable.
If you give players infinite do-overs, they will eventually redefine what "doing over" means.
The rewind mechanic wasn't about redemption—it was about practicing the logic of revision until prevention feels justified, and Braid understood something about how mechanics shape ethics before most games did: if you give players infinite do-overs, they will eventually redefine what "doing over" means, call it understanding, call it love.
Play World 2 and World 4 back-to-back without reading any interpretation online, then write down what you did differently the second time and why.
Jonathan Blow's 2016 talk 'Preventing the Awful Truth' at GDC directly addresses how game mechanics encode moral systems—watch it knowing Braid's ending, and his deflection about 'what the game is really about' becomes very revealing.