The Smithsonian's fairly recent exhibit on Ancient Rome opened my mom's eyes to how much of current science and history is quite simply speculation. There is so much we do not know, and yet they feel free to guess that this or that ancient writer is biased in one way or another. They then declare that reality must have been such and such, based on the assumed biases of a given writer, and present that as fact! "Flesh on bones of 'first ape-man'" drips of the same sort of speculation, though here at least we see some mention of other scientists criticizing such claims. Imagine basing your theories on a computer reconstruction of what you think the skull looked like before it was distorted by the forces of nature!