We take for granted that trying to communicate with alien species could be challenging, but what about with our own species 10,000 years in the future? This is the problem faced by agencies charged with safely disposing of nuclear waste. This waste stays dangerous to humans for thousands of years, so in order to protect future humans, there must be some way of telling them to avoid sites where nuclear waste is stored.
There is no guarantee that any of the languages, symbols, or cultural references we have today will make any sense to the people of the future. So how can we make sure our warnings about the dangers of nuclear waste disposal sites will be heeded? In 1981, the U.S. Department of Energy convened a panel of experts for something called the Human Interference Task Force to study the problem and issue a report. They came up with various ideas for the 10,000-year communication task, all of which have drawbacks.