The prefrontal cortex is the seat of executive function in the brain. It accommodates an impulse to lie and inhibition of the impulse to lie. "If anybody's got a good prefrontal cortex, it's got to be this 90 or at least compared to other 90 year olds," she says.
Can a little dishonesty be a good thing? How many fibs does Angela tell every day? And why does Stephen have a forehead?