A man in a red shirt is standing next to a woman in a blue dress. They are both holding hands and smiling at each other. The panel recommended using long-term prospective cohort studies in estimating mortality risk reduction. However, the panel did not recommend using short-term surveys. A company's stock price increases after a successful product launch. If a person buys 100 shares of the company's stock, does it logically follow that they are a happy person?
yes
no
yes