Full Idea
Any search for an explanation presupposes that there is something in need of an explanation - that is, something which is improbable unless explained.
Gist of Idea
An explanation presupposes something that is improbable unless it is explained
Source
Howard Robinson (Perception [1994], IX.3)
Book Reference
Robinson,Howard: 'Perception' [Routledge 2001], p.216
A Reaction
Elementary enough, but it underlines the human perspective of all explanations. I may need an explanation of baseball, where you don't.