Full Idea
The causal theory of beliefs seems condemned to treat all beliefs as true, which is absurd, …and we do not want to say that tomorrow's rain 'causes' today's belief that it will rain tomorrow.
Clarification
The 'causal theory' says beliefs are simply caused by the external world
Gist of Idea
Causal theories of belief make all beliefs true, and can't explain belief about the future
Source
E.J. Lowe (Introduction to the Philosophy of Mind [2000], Ch. 4)
Book Reference
Lowe,E.J.: 'Introduction to the Philosophy of Mind' [CUP 2000], p.92
A Reaction
This is aimed at Fodor. A false belief might be caused by reality if one had one's internal wires crossed, and a belief about the future might be caused by events happening now. This theory is not dead.