By attention, Graziano means something mechanistic: signal enhancement, allowing the attended to input to dominate the brain's processing.
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Visual information processing and ability to report on the processed information is not sufficient for awareness. A machine can do this but still be unable to answer questions about it's own awareness.
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"Consciousness is self knowledge?" Nor quite, says Graziano. We need not just the self model, and the world model, but also a model of the attentional relationship between the self and the world
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This attentional model is not of something physical, not a model of the mechanisms of attention. It's a metaphysical model.
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The brain doesn't have additional models of these models. So it can't understand when you ask it a question about them 'as models.'
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Why would the brain have evolved this attentional model?
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It allows to brain to integrate many disparate and initially disconnected pieces of information. This integration is a consequence of the attention schema theory, but integration is not itself sufficient for awareness,
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Diagram of the Attention Schema Theory.
#DesignedMindpic.twitter.com/p8OvMr2lkv
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What else does a model of the attentional relationship itself allow us to do? It allows us to adapt the control of our attention.
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We can also turn this self-world attentional model outwards and use it to model the awareness of others.
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Yes. Here is the figure from Metzinger 2006:pic.twitter.com/jgXKTY6m5F
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