Write a conclusion about how Duchamp challenges the role of the author function as defined by Michel Foucault.

In conclusion, Duchamp's work challenges the traditional role of the author function as defined by Michel Foucault by blurring the lines between creator and audience, and by questioning the authority and originality of the artist. Duchamp's readymades and conceptual art pieces force us to reconsider the notion of authorship and the power dynamics between artist and viewer. By inviting the viewer to participate in the creation and interpretation of his work, Duchamp disrupts the traditional hierarchy of the author function and opens up new possibilities for artistic expression and engagement.