Full Idea
An explanation may be bad if it fits only into a bad web of belief. It can also be bad if it fits into a (possibly good) web of belief in a bad sort of way.
Gist of Idea
Explanations are bad by fitting badly with a web of beliefs, or fitting well into a bad web
Source
J.J.C. Smart (Explanation - Opening Address [1990], p.09)
Book Reference
'Explanation and Its Limits', ed/tr. Knowles,Dudley [CUP 1990], p.9
A Reaction
Nice. If you think someone has an absurd web of beliefs, then it counts against some belief (for you) if it fits beautifully into the other person's belief system. Judgement of coherence comes in at different levels.