For me it's whether I believe that the person genuinely cares about the good of the person they're interacting with. Very, very few sales people will stop tryin

For me it's whether I believe that the person genuinely cares about the good of the person they're interacting with. Very, very few sales people will stop trying to sell you a thing just because they find out you don't need it. Put another way, persuasion is helping someone explore the topic and come to their own conclusion, manipulation is going in knowing the answer and guiding towards it. If you are trying to help someone realize a truth you knew ahead of time, you're manipulating them.