The dilemma

You are sitting across from your friend at lunch. They have just walked you through their presentation slide by slide, beaming with confidence. The error is on slide 14: a misread dataset that inflates projected revenue by 40%. Their entire strategic recommendation rests on that number. They close the laptop and say, 'I feel really good about this one, {{NAME}}.' The interview is tomorrow morning.

Your options

1. Tell them about the error directly. Point to slide 14 and explain what you see.
2. Say nothing. This is a competitive process, and you did not create the mistake.
3. Drop a hint: 'You might want to double-check the revenue projections on that middle section.'