Do Not Say Not

The other day a friend of mine, an expert in Neuro Linguistic Programming, told me that our brains can not comprehend "not". He told me that sales people trying to close a sale with a negative question, like for example; "Could you not just consider trying this out?" can easily double their closing rate by just switching their language into the positive. This is good advice for all of us. We should talk in a way to make it easy for the brain to comprehend.