Negative emissions technologies had actual impact on atmospheric concentrations of CO2, not by dint of their existence but by virtue of their not existing other than as a chimera. ...all those technologies peddled as instruments for dealing with the climate crisis when it is too late instead contributed to making it too late. What was meant to reverse climate change conduced to it becoming irreversible.

— The Long Heat by Wim Carton, Andreas Malm (Page 207 - 208)