Building upon previous research on the therapeutic object, specifically the "objet re-petit-ive abc," which draws from Lacan, Winnicott, and Guattari, I explore the generation, contribution, and erosion of knowledge in the so-called smart city. I will investigate how digital pedagogical objects, functioning as transitional objects, can serve as therapeutic purposes both within and outside institutional settings. I examine the notions of the "dérive" and psychogeography and compare them with Bernard Stiegler's concept of the "journey of knowledge" and then delve into the curation of "negentropic forms of knowledge" and the mnemonic technique of the "dérive." Taking ecological and ecosophical perspectives into account, I consider mnemonic techniques as a means to critically reflect upon the urban landscape and its transformation into a technical milieu. My overall goal is to contemplate the possibility of a Stieglerian and/or Guattarian "détournement" (philosophical hijacking) of the smart city.