If all human cultural and technological development was erased the moment before your birth and you entered a blank-slate Earth, you would be just like and have the same experience as any given anatomically-modern human born 150,000 years ago.
Our minds and daily experiences are so deeply shaped by our memes, culture, inherited knowledge and technology that this is very difficult to accept as true. And it’s mind-blowing in both directions: your experience would be just like that ancient human, but their experience was just like yours would be in this scenario.
Thinking about this now it’s giving me a comforting sort of sense of connection to a hundred thousand prior generations. And had they thought about this fact, it could potentially have provided the same connection for them to their future descendants.
But I wonder if it’s true that we can say the same - that we’re connected in this way to a hundred thousand future generations? I suspect not. I suspect that before the next 100,000 years elapse we will have changed our germ-line sufficiently (or otherwise fundamentally altered the way we reproduce or the way genetic heritability works) such that our blank-slate experience today will be primitive relative to the experience of a human of 102,021 AD.