"It's in fact a difficult problem to present a criminal mastermind, that they have to accurately guess how much all the innocents will guess; and if they fail to 'guess' what everyone else saw, or 'guess' a fact nobody else guessed, it stands out.  But you need to pay for a pretty expensive interrogator or it's not really worth it, and it also works noticeably better when you've got a larger population to use as a baseline.  So it's done on a few serious cases, too serious for a criminal to train themselves on that part of the procedure by making themselves a suspect in something more innocent in order to observe law enforcement response afterwards.  Obviously, we ask you not to be too loud, afterwards, about what exactly happened during this part."

"If you manage to get things right that nobody else on the plane got right and we're pretty sure you're not the criminal despite that, we'll present you with a Keeper Certificate of Having Done Something Impressive You Can't Talk About accordingly."

"It's in fact a difficult problem to present a criminal mastermind, that they have to accurately guess how much all the innocents will guess; and if they fail to 'guess' what everyone else saw, or 'guess' a fact nobody else guessed, it stands out.  But you need to pay for a pretty expensive interrogator or it's not really worth it, and it also works noticeably better when you've got a larger population to use as a baseline.  So it's done on a few serious cases, too serious for a criminal to train themselves on that part of the procedure by making themselves a suspect in something more innocent in order to observe law enforcement response afterwards.  Obviously, we ask you not to be too loud, afterwards, about what exactly happened during this part."

"If you manage to get things right that nobody else on the plane got right, we'll present you with a Keeper Certificate of Having Done Something Impressive You Can't Talk About accordingly."

"It's in fact a difficult problem to present a criminal mastermind, that they have to accurately guess how much all the innocents will guess; and if they fail to 'guess' what everyone else saw, or 'guess' a fact nobody else guessed, it stands out.  But you need to pay for a pretty expensive interrogator or it's not really worth it, and it also works noticeably better when you've got a larger population to use as a baseline.  So it's done on a few serious cases, too serious for a criminal mastermind to train themselves on that part of the procedure by making themselves a suspect in something more innocent in order to observe law enforcement response afterwards.  Obviously, we ask you not to be too loud, afterwards, about what exactly happened during this part."

"If you manage to get things right that nobody else on the plane got right, we'll present you with a Keeper Certificate of Having Done Something Impressive You Can't Talk About accordingly."

"It's in fact a difficult problem to present a criminal mastermind, that they have to accurately guess how much all the innocents will guess; and if they fail to 'guess' what everyone else saw, or 'guess' a fact nobody else guessed, it stands out.  But you need a Keeper to read side-channel information or it's not really worth it, and it also works noticeably better when you've got a larger population to use as a baseline.  So it's done on a few serious cases, too serious for a criminal mastermind to train themselves on that part of the procedure by making themselves a suspect in something more innocent in order to observe law enforcement response afterwards.  Obviously, we ask you not to be too loud, afterwards, about what exactly happened during this part."

"If you manage to get things right that nobody else on the plane got right, we'll present you with a Keeper Certificate of Having Done Something Impressive You Can't Talk About accordingly."