The meaning of the word "truth" as I used it in my reply, was the scientific truth or the real, actual, state of existence. What actually happened. I usually do not like this use of the word "truth," as such truths are rarely ever knowable beyond possibility of doubt. My preferred use of the word is related to honesty and sincerity. I wrote and posted my reply quickly. Immediately afterword, I vocalized "damn it" out loud. What I wanted to say was "even if I'm never able to get at what actually occurred," rather than "get at the truth."
I also may have misleadingly implied a particular interest in Rand's life, where as I actually have none. I've only read commentaries and reviews of the Branden books without actually reading them. I have no desire to read this new book either. But I'm interested in what is generally in it.