i might be in the minority here, but i wouldn't add a definitive pass/fail, personally! i like the idea that there's no way to tell what to do. imagine one player "passing," telling the others how they passed, another trying the same thing and failing... or imagine giving what feels like perfect answers only to fail because it didn't pass the android's vibe check. i think leaving it open-ended encourages wardens to lean into the vibe of paranoia you're creating.
that said i may very well be in the minority--and if you WERE to add pass/fails, freaks like me could ignore them and go full paranoia demon anyway :D