As a synthesis of neuroscience with the phenomenology, epistemology and metaphysics of western civilization, McGilchrist's hemispheric theory of the mind (the Master & His Emissary), represents critical alien phenomenology on the grandest of scales:

McGilchrist performs perhaps the most radical version of critical alien phenomenology: phenomenologically inhabiting an alien intelligence that operates from within human consciousness itself. By bracketing integrated human experience to inhabit the left hemisphere's isolated perspective, he reveals how an internal cognitive mode experiences reality—and how catastrophically that alien phenomenology has colonized civilization.

McGilchrist systematically reconstructs left-hemispheric phenomenology: how the left hemisphere experiences reality. From this alien perspective, the living world does not appear as living. The mode's inherent structure—designed for grasping, manipulating, re-presenting—transforms everything it perceives into "lifeless" objects. The left hemisphere doesn't choose to see the world as mechanism; mechanism is all it can see. Its phenomenology is constitutively reductive. This is where McGilchrist's method becomes explicitly critical. The left hemisphere was meant to be "emissary"—a specialized tool for specific tasks. But by phenomenologically inhabiting its perspective, McGilchrist reveals how it experiences its own limited map as comprehensive reality. The alien intelligence has staged a coup. What should be partial perspective has declared itself total vision. 

McGilchrist then performs the reverse operation: inhabiting right-hemispheric phenomenology to show what becomes invisible under alien dominance. The contrast is absolute—these are incommensurable phenomenologies. Where the left hemisphere sees fungible things, the right perceives unique presences. Where the left constructs static maps, the right experiences dynamic wholes. This isn't mere preference; these are fundamentally different modes of world-disclosure.

What makes this case of critical alien phenomenology especially devastating is that the alien intelligence is internal. Like Ginsberg's "Moloch who entered my soul early," McGilchrist reveals cognitive colonization from within. In unison with external surveillance systems or economic machinery—the alien phenomenology operates as our own dominant mode of attention. The metacrisis becomes comprehensible: civilizations designed by left-hemispheric cognition necessarily embody its alien phenomenology. Our institutions, technologies, and social structures perceive reality as the left hemisphere perceives it—mechanical, quantifiable, manipulable—because they're extensions of that mode's world-experience. We've built a civilization that phenomenologically matches the usurper's vision.

"Single vision & Newtons sleep" captures the phenomenological catastrophe: mistaking the left hemisphere's reductive perception for reality itself, we've fallen asleep to the right hemisphere's fuller world-disclosure. McGilchrist's critical alien phenomenology awakens us by forcing conscious inhabitation of both perspectives—making us experience the reductionism of the left-hemisphere while drawing attention to the complexity it excludes from the right hemisphere. By phenomenologically inhabiting the alien mode, we can no longer take its perspective as natural or neutral. We recognize it as one particular impoverished way of experiencing reality, now catastrophically mistaken for reality itself.