Samuel agrees to buy a small Picasso painting from Nicole for $300,000. Just prior to that, Nicole hired a reputable appraiser for a valuation of the painting and showed Samuel the appraisal document that confirms the value. Satisfied, Samuel makes the $300,000 payment and takes his prized painting home. Shortly thereafter, he does some research, and learns that the painting was not by Pablo Picasso, but by Paulo Picasso, Pablo's son, and was worth only $10,000. Samuel is not happy about this. He really wants to rescind the contract and get his money back from Nicole. What is Samuel's best argument to try to get the contract rescinded? Please explain your answer.