Roger Pielke, Jr., has said (here) that my proposed 14 wedges requires betting the future on «some fantastically delusional expectations of
the possibilities of policy implementation» and that my allegedly «fuzzy math explains exactly why innovation must be at the core of any approach to mitigation that has a chance of succeeding.»
Finally, the presence
of vigorous climate variability presents significant challenges to near - term climate prediction (25, 26), leaving open the
possibility of steady or even declining global mean surface temperatures over the next several decades that could present a significant empirical obstacle to the
implementation of policies directed at reducing greenhouse gas emissions (27).