 And what we found that at the beginning, they lied with just a little bit, maybe a few cents. Next time they had an opportunity, maybe a few dollars. And the amount by which they lied became bigger and bigger, right? It's like the slippery slope. And at the same time, we looked at activity in their amygdala. So the amygdala is a small part of the brain and it is important for emotional arousal. And what we found is at the beginning when people lied, there was a strong emotional response, right? They felt bad about lying.