Flawless? Hardly. At the beginning, while Indy and his two native guides are slogging through the Peruvian rain forest, one of the birdcalls in the background is that of an Australian kookaburra. So, in this supposedly flawless movie, we find that the bird calls aren't even remotely correct. NOT EVEN CLOSE. Not even the same continent. And this you call flawless? Philistine.