In the decades since, these ideas have been somewhat lost because the art market has discovered to sell restricted version DVDs of video works, invites to unique efficiency art items, and the objects left over from conceptual pieces. Many of those performances create works that are only understood by the elite who have been educated as to why an idea or video or piece of obvious garbage may be thought of art. The marker of status becomes understanding the work as a substitute of necessarily owning it, and the artwork stays an upper-class activity. The history of 20th-century art is …