Some 17,000 years ago, cavemen, cavewomen and cavekids picked up their cavebrushes to paint caveanimals on their cavewalls in a place that eventually would become known as the Lascaux complex. Their cavehands eternalized cavehorses and cavedeer in shady corners, an art form which continues to inspire contemporary artists such as Banksy. Despite the millennia-long deprecation of cave technology (X-caveML 2.0 never really caught on), we can still admire Lascauxian cave art, even though we will probably remain eternally oblivious of its purpose if there ever was any. This sharply contrasts with an Excel 97 sheet named mybooks.xls.bak I tried to open yesterday: perfectly remembering its purpose (my dad was maintaining a list of books he had read), I'm unable to revive the splendid tabular chaos undoubtedly typeset in Times New Roman or worse. 17 years ago somebody made a simple spreadsheet and it's literally less accessible than a 17,000 year old scribble by an unknown caveartist. Not to mention the philistines who are blacking out Banksy's recent works, which date back to last year or so. And certainly don't get me started about sustainable Linked Data. I mean, is there really such a thing? We'll be lucky if any triple at all survives 17 years. Or 17 months, for that matter. Some even have trouble keeping a SPARQL endpoint up for 17 hours. Or minutes. We might not be very good cavemen. This talk combines lessons learned from the Semantic Web, the REST principles, and the Web in general to think about what sustainability for Linked Data could really mean and how we just might achieve it. SWIB15 Conference, 23 – 25 November 2015, Hamburg, Germany. http://swib.org/swib15 #swib15