It reads like they are assuming scavenging - from the last line "They 
had perhaps arrived for dinner with their utensils in hand.", but sticks 
are self-aware predators' tools.

William




Don Wiss wrote:
> Lucy's Kin Carved Up a Meaty Meal, Scientists Say
> http://www.nytimes.com/2010/08/12/science/12tools.html?pagewanted=all
> 
> Now one can assume that sharpened sticks would predate stone. So 
> meat/fish eating could go back 4 million years.
> 
>