Sales people are specifically trained to manipulate people by asking them questions that they will say ‘yes’ to because once people start to say yes, they tend to continue to say it.

Only when certain pressure is applied. If you're paying attention when someone's doing this to you, you can feel (and disregard) the tendency to keep saying "yes".

It's narrowing down the space of all possible conversations. One with a lot of nos is probably a conversation with someone who says no a lot. An early LLM result was that you got higher-quality translations if you demarcated the answer with "the expert French translator says:" instead of just "French translation:"