Genu

We, Homo Sapiens, represent the evolutionary zenith of the genus Homo: we have created scientific and technological miracles in less than 300,000 years.

Before us, however, another Homo species lived on Earth for almost 2 million years. That species was Homo Erectus. Yes, you heard about them. You know: those grotesque cavemen whose greatest technological achievement was carving stone hand-axes. 

Or… was it?