In the work ohne rückgabe und ohne garantie (without return and without guarantee), the artist Lisa Großkopf reads out in a 17-minute video various private sales offers of artworks that she found on an Internet platform in 2021. The classified ad text opens up a parallel world to the usual academically confirmed theories of art and discourses internal to the art business, thus commenting ironically on the search for a generally comprehensible concept of art. The artist has compiled the digital classified ads in a limited edition book.