[Dr. Sivana]

I don’t know why he talks of suing the Wapo when he knows it’s certain to fail.

For the same reason that Sarah Palin sued the New York Times, and the same reason why a friend of mine spent $10,000 challenging a No-Fault Divorce in CT. Nobody wants to acquiesce in his own destruction, especially when reputation is involved. If you don't fight back, it would be all to easy to the matter is settled and non-controversial.

[Mariner]

IF Moore signed her yearbook he should not be saying her doesn’t know her.

[FreedomNotSafety]

Because if he sues he can be deposed and compelled to give a deposition under oath. Which means placing himself in legal jeoprody should be get caught lying. If he sues then it will go along way to erasing any doubts he has nothing to hide.