This explanatory idea comes particularly from Dr Iain McGilchrist. He has written two major books (both rather long).[1] [2]
The central thesis is that animals, including humans, have two hemispheres (halves) to their brains for good evolutionary reasons. They do different jobs and, by working together, give us more than we would get if we had only a unitary brain.
In particular, he claims, using clinical observation of patients with stroke or damage to a particular hemisphere, that modern society has become ‘left-brain dominant’ with the right hemisphere more idle that in the past.
The problem is that, while the right hemisphere observes reality as it is, it is the left that interprets and theorises. This is great when both halves work together, because the right can then check the theory against reality.
The effect of an inactive right brain is that the individual lives in an imaginary, theoretical, ideological world. The left brain is very susceptible to being fed plausible notions which make the individual look virtuous or important.
In the context of Revive Britain, this help explain the rise of Woke ideology and the modern habit of, for example, believing that a trans woman is a woman, rather than the reality that they are a man who dresses and acts as he thinks a woman acts.
YouTube
Human Nature and the Divided Brain | Iain McGilchrist
[1] Iain Mcgilchrist The Master and His Emissary: The Divided Brain and the Making of the Western World
[2] The Matter With Things: Our Brains, Our Delusions, and the Unmaking of the World.