The challenge is simple. Every female must be 1 and under in strengths. If she is higher she needs to be banned from the tribe, because it's believed that a she can't take care of babies and collect berries if she can't be gentle because of her claws. While males have to be 2 and up in strengths, because then the ones under also need to be banned. Otherwise how can they protect their children if they aren't strong. Equipped with claws and fangs.  I think it's hard cause somehow yo