I often wonder if what science often insists is the "earliest" human is really just the earliest human they have found evidence of. It's a long time ago and not a lot of places on Earth had the exact circumstances that would preserve that evidence for hundreds of thousands or millions of years. So the "earliest" civilizations are actually just the earliest we've discovered, yet. And the earliest humans? I have a feeling it will go back farther as time goes on.
I sometimes wonder if civilization on this planet has waxed and waned several times in the past, and it was so long ago and the end was so destructive that we know nothing about it. For it to take nearly all of the 200,000 years for humans to get with the program seems highly unlikely to me.
I think my biggest problem with all of the paleo research done on proto humans is the assumption that all of these skulls etc. are different species. I have long felt that in fossil assemblages where you have the different skulls it is just normal variation of the same species. Look at modern humans, we have loads of different features, I find it odd that the paleontologists can't wrap their heads around the concept that the proto humans were the same as us.