I am reading a book on epistemology and this section of the comments seem to be sort of that.
> According to the externalist, a believer need not have any internal access or cognitive grasp of any reasons or facts which make their belief justified. The externalist's assessment of justification can be contrasted with access internalism, which demands that the believer have internal reflective access to reasons or facts which corroborate their belief in order to be justified in holding it. Externalism, on the other hand, maintains that the justification for someone's belief can come from facts that are entirely external to the agent's subjective awareness. [1]
Someone posted a link to the Wikipedia article "Brain in a vat", which does have a section on externalism, for example.
> According to the externalist, a believer need not have any internal access or cognitive grasp of any reasons or facts which make their belief justified. The externalist's assessment of justification can be contrasted with access internalism, which demands that the believer have internal reflective access to reasons or facts which corroborate their belief in order to be justified in holding it. Externalism, on the other hand, maintains that the justification for someone's belief can come from facts that are entirely external to the agent's subjective awareness. [1]
Someone posted a link to the Wikipedia article "Brain in a vat", which does have a section on externalism, for example.
[1] https://en.wikipedia.org/wiki/Internalism_and_externalism