24 Lee's orders were verbal, overheard by no one else, and their content has been the subject of much speculation, but Jackson's subsequent movements and Lee's message to Huger from the Hogan house (Lee's Dispatches, 18), leave scarcely any ground for doubt as to what Jackson understood his duty to be. 25 O. R., 11, part 2, p853.
EADP requires that we eliminate any genuine grounds for doubt and those include more than mere contraries (propositions which are such that they both cannot be true, but they both could be false).
For example, the proposition, U, considered above is a grounds for doubting h, but h and U could both be true.
Furthermore, the only way S could eliminate c as a ground for doubt would be by denying it, since nothing could neutralize it.
Finally, it could be a ground for doubt for one person but not for another person (or the same person at another time), depending upon what each believes (at the time).
Note that, given this characterization of genuine grounds for doubt, S need not have any evidential support for d.
There are grounds for doubt.
Correspondence between London and Edinburgh offered further grounds for doubt.
In addition there are grounds for doubt whether the required jump in investment will be forthcoming, and for worry by how much it would deteriorate South Africa's current account deficit.
Evolution as a principle is not disputed in the scientific mainstream, where the term "theory" does not mean a hunch, but an explanation backed by abundant observation, and where gaps in knowledge are not seen as grounds for doubt but points for future understanding.
But here too there are grounds for doubt (Prinz, 2006).
