Intellectual labor is a common technique for the avoidance of thinking.

A Fanfare for Peter.

It is as though some old part of yourself wakes up in you, terrified, useless in the life you have, its skills and habits destructive but intact, and what is left of the present you, the person you have become, wilts and shrivels in sadness or despair: the person you have become is only a thin shell over this other, more electric and endangered self. The strongest, the least digested parts of your experience can rise up and put you back where you were when they occurred; all the rest of you stands back and weeps.

Of course, the truth is that no one likes change. People in hell not only refuse to leave it, they invite you in, too. Even people who have blasted the other lives that touched their own blasted lives proudly declare in old age that they would not change a thing -- all that cursing and screaming was their life, by God, and it is not possible to imagine any other. Change introduces unpredictability, uncertainty, a universe of disorder. Right before an amoeba splits in two, it says to itself, uh uh, no way, I ain't gonna do that, nope.

When, in the third book, we do learn the identity of the Blue Rose murderer, the information comes in a muted, nearly off-hand manner, and the man has died long before.

...nobody can protect anybody else from vileness. Or from pain. All you can do is not let it break you in half and keep on going until you get to the other side.