[WalterBright]

Lying to get away with $10 is a lot different from lying to get away with murder.

[Reelin]

If the machine could catch people lying for $10 (or $50, or ...) in a double blind study, that would set a quantifiable lower bound for its effectiveness.

[rasz]

1 How do you know. 2 Not for a psychopath.

[chaorace]

I have to disagree. A psychopath will value their freedom more than $10 and will be inclined to react differently.