  Resources can be external, material goods, such as land and moveable property. One can also extend the domain, and consider traits of persons that are latent talents or instruments that help them to achieve their ends as also included within the set of resources to be equalized. Extending the domain in this way will introduce complexity into the account, because personal talents are attached to persons and cannot simply be transferred to others who lack talent. What one can do is take people's variously valuable personal talents into account in determining how material resources should be distributed so as to achieve an overall distribution that should register as (sufficiently) equal. If Smith lacks good legs, this personal resource deficit might be offset by assigning Smith extra resources so he can buy a wheelchair or other mobility device.