Efficient Market Hypothesis (EMH)

Person 1: What is efficient market hypothesis?
Person 2: It states that it is impossible to “beat the market”, unless you are lucky!
Person 1: Really?! Why?
Person 2: Because the stock market efficiency causes existing share prices to always factor in and reflect all the public information.
Person 1: Oh, does the efficient market hypothesis work?
Person 2: To a good extent, yes. Eugene Fama, who developed it in 1960s, won the Nobel Prize in 2013.
Person 1: How can I benefit from efficient market hypothesis?
Person 2: Opt for an investment methodology that gives importance to this hypothesis.