Recently I’ve been trying to answer the question “What is permanence?”. I’ve done a some research as to how this concept applies to paper. For example what is “archival quality” paper and how long should we expect it to last and under what conditions? Why is some paper 25% cotton and some 100% cotton? What are we trying to achieve and are we likely to be successful? After watching the tragedy of the Notre-Dame de Paris I find the concept of permanence to be frighteningly fragile.