A sales call to speak with hope is answered to history of the memory of the man walking on the street, the man is ready to share with his family and friends while the indicators of the cars around him are speaking to him to purchase the product and realizing the value of the product, monetary as well as a gift for entertainment, he is conscious of his wallet with many smiles.
The understanding of the inter-relation of the physics and the electro-magnetics is in the emotional flux of the perception.