Bill Zebub
“It’s probably Matt Mercer’s fault.”
And if the Voice on the radio (in reaction to Hans failed Deception check) instead said:
Voice: Roger. We'll hold off until you get that leak sorted. Good luck down there! (Secretly dispatches a Stormtrooper squad to the Detention level)
Han only gets to react with a Plan B if he succeeds on an Insight check vs the Voice (or I fail my Deception check with my lie v Han's passive Insight).
Barring a successful insight check from Han (or a failed Deception check by the Voice) far as Han is aware, his lie worked.
I'm also fine if the player suspects stormtroopers are coming and acts on that. For two reasons:
1) It's completely plausible for a player (or a real person) to realize their lie came out badly.
2) Either story path is totally fine. Why is it so important that someone's notion of what's "realistic" is the path that gets chosen?
One thing I think about is how many different outcomes are possible. If you look at the four possiblities: known positive, known negative, false positive, and false negative, how many are supported?
The version where the player believes (incorrectly) that his lie works is still possible with this approach. He might have rolled a 10, and with his bonus thinks he's probably rolled well enough, but is wrong. Or he might have rolled a 15 and think he's totally got it nailed, not realizing the person on the other end has a voice stress analyzer that gives him a huge bonus.
But if the DM is ruling that the player cannot use knowledge of their die roll result, under what scenario is it possible for the character to know they lied badly?
Everyone is entitled to play however they want, of course, and if somebody wants to pretend they don't know they failed the roll (and sometimes I'll do that, too, if it seems especially fun) but in my opinion, and at my table, nobody gets to decide that except the player.