Perhaps this is why Joe Posnanski is not doing a big media tour to promote his book Paterno. It would take too much out of him to repeatedly defend a coach nobody wants to hear being defended.

Posnanski appears Wednesday on Costas Tonight (NBC Sports Network, 9 p.m. ET). The 90-Minute Show Includes Costas’ full November 2011 interview with Jerry Sandusky from Rock Center with Brian Williams with never-before-seen footage.

Posnanski has done limited interviews since release of the book last week. You can see why from the Costas interview. There are tough questions to be answered.

Here are some of the more interesting segments.

On the Freeh Report being flawed:

Costas: “Without getting bogged down in the particulars, this is the essence of Louis Freeh, former FBI director‘s report. The conclusion: In order to avoid the consequences of bad publicity, Paterno, among others, but again Paterno is the figure that the public gravitates toward here, repeatedly concealed critical facts relating to Sandusky’s child abuse from authorities, the university’s trustees, the Penn State community and the public. If that is true, as Freeh concluded, it is indefensible.”

Posnanski: “Absolutely”

Costas: “You don’t believe that though.”

Posnanski: “I don’t believe that, no. I honestly don’t. I honestly believe that what Louis Freeh did, and I have no qualms with the Louis Freeh report, he had his goals and his role in this thing.”

Costas: “Well if you don’t think that’s true, you must have qualms with his report.”

Posnanski: “He didn’t talk to Tim Curley; he didn’t talk to Gary Schultz; he didn’t talk to Joe Paterno; he didn’t talk to Jerry Sandusky; he didn’t talk to Tom Harmon; he didn’t talk to Mike McQueary. He didn’t talk to any of the major players in this and I think, I understand why he went to those conclusions, and he did, but I believe the report is very incomplete and I do believe that as things come out, it’s going to emerge that some of the people who wrote some of the emails and so on are going to say that everything has been misspoken.”

“My feeling again is, and I’m really not looking to dodge because there are so many things that we don’t understand and hard to know, but I have many of the same facts that I reported on my own that are in the Freeh report – he jumped to conclusions that I cannot jump to. I mean, I jump to definitely there was a sense that Joe Paterno knew more than he suggested; there’s definitely a sense that Joe Paterno should have done more. But the cover up, the idea that he was actively following it, these sorts of things, I think they’re still, to me, they’re still up in the air.”

On the tough reviews for the book:

Costas: “Obviously there has been mixed reaction to the book. Among the reviews we’ve seen so far, this is the most extreme, Paul Campos at salon.com, ‘Paterno is a disgraceful book and a minor literary crime. To say Posnanski botches his journalistic and literary opportunity is akin to saying that the Titanic’s maiden voyage might have gone more smoothly.’ Let’s concede that that’s at one end, what criticism somewhere towards the middle of that, do you concede correct or fair?”

Posnanski: “I kind of felt like those guys in Spinal Tap there when you were reading that review. I think this is a book that as people get away from this, and are less emotional about it; they’ll see what I was trying to do in this book. I think that some people see it now, fortunately. But I think as time goes on and as people get less emotional about it, a lot of people who have written reviews, frankly, came in with the same opinion that they went out with. I’ve been, as you know, taking a lot of hits long before the book came out.”

On his feelings about Paterno:

Costas: “(According to public opinion) the only acceptable take is that Paterno was fully culpable in the most extreme interpretation, and that he was, prior to that, a fraud and a hypocrite and this doesn’t just invalidate the good he may have done, it exposes that good as a fraud.”

Posnanski: “Exactly, and I think that’s what certain people wanted. That’s not the story, that’s not the book. I wasn’t going to write THAT book. Somebody else can if they want. I wrote the honest book, the book that I believe is true. I believe that I had better access than I’ll ever get again for a book and I believe that I used it as well as I could.”

Costas: “What did you come away thinking? What is your bottom line on Joe Paterno?”

Posnanski: “I think really what I come away with is what a complicated life it was and what a big life it was.”

Costas: “Do you view him as a good man who made a tragic mistake, be it of omission or commission? Or is he less of a good man because of that mistake?”

Posnanski: “It’s somewhere in the middle. That’s a tough one. I don’t want to dodge it. I think he did a lot of good in his life and I think he did make a tragic mistake.”

Costas: “At his best, was he a good man?”

Posnanski: “Definitely. At his best, I think it’s too long and too distinguished and too many achievements to think that it was worth nothing.”