if ppl think that humanity magically appeared on planet earth of 6 billion years old then they are in for some work. we are not the first civilization on this planet. metal and wood is lost in stone after 30k years. there has been far more advanced civilizations here before the meteor hit IMO and the aliens we so called see are the ones that escaped. there is a reason you see perfect spheres made of metal that are 500 million years old that cannot be made naturally. what is their use? and why did we find them?