According to Simmel, dyads are the most – of all types of groups because both people must remain – to the group for it to exist. Because of this trait, dyads have inherent –, although they can still be –.

1. state-issued photo ids. provide them for free for those who can't afford them.

2. the system we have seems to be working nearly perfectly. seems like about 31 cases per billion votes cast

3. the national policy for hiring new employees which requires proof of eligibility to work. there are something like 20 types of identification which can be used for this.