A thing about cash, though, is that another problem with precisely those occasions when "trust is gone, where there is unequal power relationship" is that cash

A thing about cash, though, is that another problem with precisely those occasions when "trust is gone, where there is unequal power relationship" is that cash can be forcibly taken away from you. At every scale from muggings to home robbery to retail store robberies up to bank robbery and knocking over armored cars, cash handling imposes a security and risk management burden, with a particular component of risk of physical violence that is much less of a factor in electronic security risk models..