Health costs, of which at least a portion is easily measurable through medical bills, would be another. Strictly speaking, these damages do not constitute a public goods problem, but concern gaps in the liability system of the existing legal framework or arise from a failure to detect relevant causal relationships or to identify those responsible for the causes. With increased information and tighter legal regulations, these externalities would not need to exist. At the same time, these externalities are the most easily quantified and are often those which are used to most effect in public discussion.