This paper investigates the polysemic character of the Efficient Market Hypothesis through a comparison of the contributions of the two authors who introduced this hypothesis in 1965, Eugene Fama and Paul Samuelson. While both had a normative approach, it is argued that the key point distinguishing the two contributions is the expertise developed by each author.
Paul Samuelson's 1941 thesis at Harvard, which later was published as his book. A free harvard-style reference generator. Theses and dissertations. Dissertation. A free harvard-style reference generator.