Full Idea
It is not clear what would even be meant by supposing that there are causal relations to mathematical facts.
Gist of Idea
How could there be causal relations to mathematical facts?
Source
Michael Williams (Problems of Knowledge [2001], Ch. 2)
Book Reference
Williams,Michael: 'Problems of Knowledge' [OUP 2001], p.30
A Reaction
I agree, though platonists seem to be willing to entertain the possibility that there are causal relations, for which no further explanation can be given. Better is knowledge without a causal relation.