Because science is vague?

I always wonder what history will look like for future humans.

500-10,000 years after we're done blowing ourselves and our planet to bits, the next great civilization on this planet will assume the 20th century was where it all started since there wont be anything left of the past not already dug up, sold to antiquity dealers or pulverized/defaced for developments or religion. Even the bones of dinosaurs have been largely dug up and cataloged already. We're finding less and less ancient history every year.

Without the vast knowledge we've gained by basically disturbing history, what will our future selves even think about earths history?

There is always a lot of documentation on what we've found and think we know about the inside of the big pyramids, but if we were actually to deconstruct them brick by brick, what do you think we would find? (hypothetical)

"Hey guys I just watched this funeral yesterday afternoon. There was some really nice stuff in there. Lets go move that 15 ton rock out of the way and take it all!"

That and their civilization was thousands of years old, had mastered so many arts, yet in all their millenia never figured out how to seal a tomb properly.

Except maybe Giza. Im sure there is some crazy stuff buried under it.

Arent these tombs sealed with giant multi-ton stones or something?

Just like 'climbing' everest... with all the sherpas carrying all your crap and holding your hand the whole way.

Seems like every time we come across a new tomb, robbers have already been there. Took mankind thousands of years to find this, but grave robbers beat em to it every time.