ZZ One (with his considerably lower reasoning capacity than the other robots) argues, from the perspective of the First Law, that the Jovians realised that they could not harm humans.
He had come to the world eight days ago with a functioning reasoning capacity and no memory.
Indigenous people initially thought that a convert to Christianity would lose the reasoning capacity and become an idiot.
I'm sure I don't need to explain to you that your emotions are manifest in your body's physical response to your five senses, in concert with the reasoning capacity of your brain.
The answers-and the desire to seek those answers-will come from our uniquely human combination of physical emotion and objective reasoning capacity, and our physical need to survive.
But we also have the ability to use our reasoning capacity to look ahead and anticipate dangers and organize preëmptive responses.
By definition, someone who's been brainwashed is operating at less than his optimum reasoning capacity.
Actually you have plenty of reason to worry if your reasoning capacity is so stunted that you are unable to reach the same conclusion about man's contribution to climate change as the majority of the world's best minds have reached.
Golding's technique in such passages is almost a reversal of the procedure which marks such a great step in the development of Lok's reasoning capacity.
Epigraph: "You see, reason, gentlemen, is a fine thing, that is unquestionable, but reason is only reason and satisfies only man's reasoning capacity, while wanting is a manifestation of the whole of life."