Full Idea
The problem of Concurrent Retrieval is a problem for internalism, notably coherentism, because an agent could ascertain coherence of her entire corpus only by concurrently retrieving all of her stored beliefs.
Clarification
Her 'corpus' is the body of all her beliefs
Gist of Idea
Coherent justification seems to require retrieving all our beliefs simultaneously
Source
Alvin I. Goldman (Internalism Exposed [1999], §3)
Book Reference
Goldman,Alvin I.: 'Pathways to Knowledge' [OUP 2002], p.11
A Reaction
Sounds neat, but not very convincing. Goldman is relying on scepticism about short-term memory, but all belief and knowledge will collapse if we go down that road. We couldn't do simple arithmetic if Goldman's point were right.