"Hall of mirrors"

     "If the right hemisphere delivers 'the Other' – experience of whatever it is that exists apart from ourselves – this is not the same as the world of concrete entities 'out there' (it is certainly more than that), but it does encompass most of what we would think of as actually existing things, at least before we come to think of them at all, as opposed to the concepts of them, the abstractions and constructions we inevitably make from them, in conscious reflection, which forms the contribution of the left hemisphere. But what if the left hemisphere were able to externalise and make concrete its own workings – so that the realm of actually existing things apart from the mind consisted to a large extent of its own projections? Then the ontological primacy of right-hemisphere experience would be outflanked, since it would be delivering – not 'the Other', but what was already the world as processed by the left hemisphere. It would make it hard, and perhaps in time impossible, for the right hemisphere to escape from the hall of mirrors, to reach out to something that was truly 'Other' than, beyond, the human mind.
     "In essence this was the [culminating] achievement of the Industrial Revolution."

     Iain McGilchrist, The master and his emissary:  the divided brain and the making of the Western world, new revised edition (New Haven, CT:  Yale University Press, 2019), 386.