Detournement

From what I grasped from this article, the concept of Detournement seems like to resemble the ideas of the Futurist. The idea of totally recreating something and removing its entire memory /  context and creating a completely new identity that will create a new embedded memory. I am also confusing the difference of appropriation and Detournement. I see them both walking on the same line by "it is in fact necessary to eliminate all remnants of the notion of personal property in this area. The appearance of new necessities outmodes previous “inspired” works. They become obstacles, dangerous habits. The point is not whether we like them or not. We have to go beyond them." Is there truly a difference between the two?