…we conducted a literature survey on each of the [problems comparable to the problem of space debris]. We then determined the length of time spent in each stage (problem identification, establishment of normative behaviors, mitigation, and remediation) based on research from periodical sources, legislative records, and court rulings… Finally, we inspected each timeline and made a judgment about the approximate year in which each problem entered a new stage… The result is shown in Figure 6.1, and it provides a notional comparison that shows how each of the problems progressed through the four stages.
Could be interesting to see this kind of analysis for a greater range of societal challenges, or sets of challenges chosen for how similar they are to a different target case. (The target case for this report was space debris.)