Sorry I don't follow. When did I or the book say anything about lying to people?

Could it be not possible that a product can actually help a person get what s/he wants? Or be the best thing to suit their needs. Do you have an objection to that statement?

I actually believe my product is the best fit for my target (not everybody but a very small niche of few thousand people in this world). When I find those persons it indeed feels very easy to sell my product to them and also get repeat business.