Rush made a good point about this today.
He pointed out Ginsburg gave detailed answers to those issues/cases in which she had already gone on record, either through writing about the case in question or commenting on it in public.
So she was offering no new information during her confirmation hearings by regurgitating her already-published positions.
And on the flip side, she offered no opinion on cases/issues on which she had no track record of already having done so, hence the "Ginsburg Rule".
This is what you get when the court becomes just another political branch, only worse because it does not answer directly to the people. This is just what you get: evasiveness and deceptiveness. Roberts is just one in a line of these types. In a judge, the character trait of evasiveness is most prized, that is until you start making the society altering decisions that everyone else must live by.