The woman knows that, in the Hadzas' case here -- digging roots to share with men in exchange for meat -- she knows that all she has to do to get access to protein is to dig some extra roots and trade them for meat.
Naine teab, et tema kaevatud juurikad jagatakse meestega liha vastu - ta teab, et proteiini saamiseks peab ta rohkem juurikaid kaevama ja need liha vastu vahetama.