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We commonly consider the contribution of the effectuation developed by Sarasvathy as an alternative perspective to the causation one. In this paper, the author defends the idea that, even if these two logics were built on different pillars, the causation and the effectuation are eventually two sides of a coin. To understand the structuring of these two logics, the author mobilize Palo Alto's theory of communication, which is extended in order to include entrepreneurship in another paradigm: the paradigm of entrepreneurial action. The paper ends with a discussion of the interest of the latter within entrepreneurship research.