Think about what Earth was like 50 million years ago. It was the Eocene "New Dawn" period. India was just starting to join Asia (physically, in the tectonic sen

Think about what Earth was like 50 million years ago. It was the Eocene "New Dawn" period. India was just starting to join Asia (physically, in the tectonic sense). The Cretaceous-Tertiary extinction saw one or more asteroids kill off most of the dinosaurs. Both North and South poles were forested and Alaska was a rain forest. Grass was a new member in the evolutionary family tree. Primates started appearing, and mostly dwarf species thrived. If you think about what the fossils from this time period looked like, you can pretty much guess what your message will look like to a future finder in a similar time scale. What you can't guess is what any life form will look like, because nearly nothing alive that long ago even looked like it does today. And we should expect that in the same time period going forward. Buildings from only a couple thousand years ago are barely recognizable until we dig cleanly around them, and we can't even figure out half of the features we find in them. Imagine such longer time scales. The digging will be a lot deeper. Tectonics and natural flora cycles will ensure that everything we were has been ground up and recycled repeatedly. It will be nigh impossible to find anything more intelligible than the 50 million year old fossils we find today. But all is not in vain. With how over populated the Earth is right now, they'll find a whole lot of human-based crude oil to run whatever kind of automobiles they're driving by then.