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In line with the recent research and debates about econophysics and financialeconomics, this article discusses on usual misunderstandings between the twodisciplines in terms of modelling and basic hypotheses. In the literaturedevoted to econophysics, the methodology used by financial economists isfrequently considered as a top-down approach (starting from a priori "firstprinciples") while econophysicists rather present themselves as scholarsworking with a (empirical data prone) bottom-up approach. Although this dualistperspective is very common in the econophysics literature, this paper claimsthat the distinction is very confusing and does not permit to reveal theessence of the differences between finance and econophysics. The distinctionbetween these two fields is mainly investigated here through the lens of theEfficient Market Hypothesis in order to show that, in substance, econophysicsand financial economics tend to have a similar approach implying that themisunderstanding between these two fields at the modelling level can thereforebe overstepped.

On the "usual" misunderstandings between econophysics and finance: some clarifications on modelling approaches and efficient market hypothesis