This is something that we may be facing soon or perhaps are already facing. How long will the information recorded in digital format will remain readable? The danger is not only the degradation of the digital data carriers, but the progress in technology that makes the old data carriers obsolete. Some of us perhaps are facing this already as we cannot access our old floppy disks the new computers do not have floppy drives. The CDs and DVDs are still accessible but perhaps not much longer. The data can be stored on a cloud of course, but the cloud companies can go out of business. I am wondering if the digital information that has been generated during the last 20 years will still be accessible in 100 years from now.