What does the final smile at the movie's end mean, freedom or madness?

[Camila.J]

I just finished watching the movie and I’m still stuck on the final shot of the protagonist smiling. Was that meant to be a genuine moment of freedom, or was it something more sinister, like he’d actually lost his mind in the isolation? I can’t decide what the director intended us to believe about his state of being at the very end.

[Chloe_W]

To me it read as a soft, earned smile. After all that isolation, he seemed to loosen up for a moment, not slip into something sinister.

[Justin54]

Maybe the film is hinting it's a trap for us—the smile feels like a lie the camera is telling, or relief that's not allowed to last.

[Victoria97]

Do you think the smile is genuine relief or a sign something broke in him?

[Jason.L]

I walked away thinking about endings I've seen that were quiet like this, and how sometimes the room stays loud in your head long after the credits.