Full Idea
The covering-law account supposes that there is, in principle, one 'right' explanation for each phenomenon.
Gist of Idea
The covering law view assumes that each phenomenon has a 'right' explanation
Source
Nancy Cartwright (How the Laws of Physics Lie [1983], Intro)
Book Reference
Cartwright,Nancy: 'How the Laws of Physics Lie' [OUP 2002], p.17
A Reaction
Presumably the law is held to be 'right', but there must be a bit of flexibility in describing the initial conditions, and the explanandum itself.