When no amount of cash or currency we have available can secure the goods or services that we need, practical need will step in and demand that we exchange whatever we have or can offer to secure whatever we need.
Ultimately, as real creativity, innovation and entrepreneurism begin to thrive at the community level, one thing will again become apparent to us all:
The real base currency is the element that is common to every exchange: The time it has taken somebody to grow, produce, manufacture and transport whatever it is that the end user wants.
In other words, the real base currency is (or will be corrected to become) the value of input that an individual can make themselves, as the basis of an exchange to provide everything that they need to meet the requirement of being self-sufficient.
DIY Politics UK 