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How do we know it hasn't? If some clever species of dinosaur ~100M years ago had a few thousand years of rapid progress like we've had -- before blowing themsel
by Figs 1y ago
How do we know it hasn't? If some clever species of dinosaur ~100M years ago had a few thousand years of rapid progress like we've had -- before blowing themselves up... would we even be able to tell?
- Manuel_D 1y agoWe'd have been able to see, for example, ice cores showing chemical changes in the atmosphere from industrialization. You can't carry out the same kind of massive activity that humans did without leaving some evidence. Even the Black Death was observable in ice cores on account of fewer humans burning wood.
- lblume 1y agoHumanity has left many traces. An interesting example is a vast amount of chicken bones buried underground.
- chuckadams 1y agoNone of which are even close to even 100,000 years old, let alone a million or 100 million.
- Jensson 1y agoWe have stone tools from a few million years ago. Modern things are much larger and numerous so would be much easier to find and last longer. https://www.livescience.com/archaeology/human-evolution/2-6-million-year-old-stone-tools-reveal-ancient-human-relatives-were-forward-planning-600-000-years-earlier-than-thought https://www.livescience.com/archaeology/human-evolution/2-6-...
- nkrisc 1y agoWe don’t know it hasn’t, but we have no evidence it has.
- ForHackernews 1y agoThis is actually a somewhat active area of research https://en.wikipedia.org/wiki/Silurian_hypothesis https://en.wikipedia.org/wiki/Silurian_hypothesis The absence of detectable plutonium-244 (half-life of 81.3 million years) is one indication that we are ~probably the first civilization on Earth to discover nuclear fission.