I've never really been convinced by these kind of grandiose abstract messages. I think our best bet to actually convince a hypothetical future civilisation not

I've never really been convinced by these kind of grandiose abstract messages. I think our best bet to actually convince a hypothetical future civilisation not to dig it up is an understated "FYI: This is radioactive waste. It's a pile of worthless stuff that will make you sick." in a few major languages. If we add more ceremony to the message, they may more likely to understand it, but I think they'll be less inclined to believe it. Why would we spend so much effort to protect something worthless? And ultimately, how much is it worth to prevent a few excavators in the far future getting radiation poisoning? And for that matter how likely is the hypothetical series of events needed for this to happen? I think like many things to do with radiation, we're vastly overweighting the risks involved.