Hints - Anthropology

Click hints to reveal.

Hint to start puzzle: Start by figuring out what number each hand sign maps to. Then, solve the given logic puzzle. That will open the second part of the puzzle.
Hint for extraction: First, order and figure out who's speaking in each of the 8 audio clips. Last, get 2 letters from each clue to obtain the final 16-letter cluephrase. Make sure you've used everything the grid gives you!