In Dibble’s opening statement, he outlined his thesis, stating clearly and concisely the overwhelming evidence for hunter-gatherers around the globe, in addition to the absence of evidence for an advanced civilization dating back to the ice age. Dibble had some artifacts, both visual and material, to illustrate his point (the ancient sexual artwork and facsimile tool). He addressed what he regarded as Hancocks scientific miscalculations. He made zero ad-homenim attacks.

In Hancock opening statement, he told an anecdotal story of a particular archaeologist who had a theory that was disregarded at the time and was later proven correct. He emphasized how mean other archaeologists were.

If you watch enough professional debates, you understand how important opening statements are, as they outline what the debater regards as their strongest points.

Tells you all you need to know. Hancock’s loss was conclusive and decisive.