[Smudge]

There's informational value, sure. Historical value, aesthetic value, certainly some material value. And, sure at the end of the day, it's one small scratch on one artifact in one small part of the world. But if this kid's behavior is okay, then where do you draw the line? Can everyone etch their names in ancient sculptures and artifacts? Why not take some of it home with you? (After all, removing one stone out of thousands hardly affects the historical value of a site, no?)

You see where I'm going with this. We react so strongly to one small incident of graffiti because it's simply not sustainable. I'd like my kids (and their kids) to be able to visit sites like, say, the Acropolis in Greece and find the Parthenon (which was historically subject to a ton of looting and careless damage) as well-preserved as possible.

One could always make the case that it's not worth preserving these sites at all, but that's a different argument, and those of us who are interested in the historical value would certainly beg to differ.