For philosophical sake,
Indirect Realism does posit what is equivalent to Kant's noumenon as demonstrated below:
Indirect Realism's Mind-Independent Reality
Here is the definition from WIKI which is the same as elsewhere:
The external world as it really is, is equivalent to Kant's noumenon aka thing-in-itself, i.e. the external world as it really is.Indirect realism is broadly equivalent to the scientific view of perception that subjects do not experience the external world as it really is, but perceive it through the lens of a conceptual framework.
https://en.wikipedia.org/wiki/Direct_an ... ct_realism
Here is Google Search AI:
Indirect realism is a philosophical theory that states that people perceive the external world through a conceptual framework, or "veil of perception", rather than directly experiencing it:
Explanation
Indirect realism holds that the external world exists independently of the mind, but that people perceive it indirectly through sense data. This means that people perceive an image or appearance of an object, rather than the object itself. For example, when watching a movie, people are not directly seeing the actors, but are seeing them through the lens of the camera and TV.
Google Search AI

Indirect Realism: people perceive an image or appearance of an object, rather than the object itself
Kant's Noumenon
Comparing the said object targeted in each:A noumenon is a philosophical concept that refers to an object or event that exists independently of human senses.
Google Search AI
Indirect Realism's Mind-Independent Reality
-the external world as it really is
-the external world exists independently of the mind
Noumenon
an object or event that exists independently of human senses.
Therefore the object or reality that Indirect Realism points to is the same as what Kant termed as the noumenon.
The object of Indirect Realism is indirect and transcendental because it exists beyond [transcendentally] the human perception.
So, Indirect Realism does posit what is equivalent to Kant's noumenon.
If otherwise,
can anyone show me references where Indirect Realism specifically does not claim that "the external world exists independently of the mind" which is the same as 'exists independent of human senses'?
Discuss??
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