According to the theory of virtual representation,

1)Paper money has value by virtue of the fact that it is backed by the full faith and credit of the government.
2)Colonists were represented in Parliament by virtue of their British citizenship. The existing representatives would keep them in mind and speak for them.
3)The best interests of criminal defendants are represented by their attorneys.
4)Slaves were represented in Congress by virtue of the fact that their owners were voters.