As with other uncertainties in the modeling, my concern is that reality could be worse than any of the models. (opinion-nation.blogspot.ru)
The magnitude of the impact is found to depend not just on oil prices, but also on other uncertainties connected to energy supply and demand technologies, alternative resources and climate policy. (sciencedaily.com)
But implementing that technology engages other uncertainties, eg the size of the judiciary. (newlawjournal.co.uk)