Taking responsibility in either sense needs to result in something concrete, and in my case it means that I will not be co-authoring any books like this anymore. I will not be putting myself in this position again.
I mentioned that I needed to state a few specifics. One of them is that after I gave my sections to Randy for editing and blending, I did not do anything more. I looked at the manuscript when it came in, but did not read through the whole book, left to right. I do not know that doing so would have changed anything, but it could have. This is an example of practical responsibility.