People think that evolution is controversial, where we're said to evolve from monkeys due to our genetical makeup. But in reality it's a fact that humans adapt and change according to their physical environment. So it would only be natural if humans hundred's of thousand's of years ago looked completely different. For me, scientists have to prove if we evolved intellectually. Sure, bodies and genetics can change over time, but what defines humanity is our brains, no?
just a heads up that , most human fossils follow a trend of increasing cranium volume the closer to present day they are dated to, basic body plan of humans hasn't changed much in 1.6 million years, but the size of the brain has, About as definitive as it gets.