... a small number of researchers, including me, are increasingly arguing that the evolution of self-consciousness has posed a different kind of problem altogether. This position holds that our ancestors suffered the unshakable illusion that their minds were immortal, and it’s this hiccup of gross irrationality that we have unmistakably inherited from them. Individual human beings, by virtue of their evolved cognitive architecture, had trouble conceptualizing their own psychological inexistence from the start.
I should think you would want to prove that something is an illusion and not simply assert that it is. It would also seem reasonable to at least consider that we think they way do in this instance because thinking this way is sort of built into us, and that it may be built into us because it corresponds to reality. It is just possible that our consciousness has adapted itself to the way things are.
But then there's this:"Consider the rather startling fact that you will never know you have died." How does our author, not having died yet, know that? Of course, he doesn't know it. He just thinks it. This piece is a textbook example of the sloppy reasoning so many scientists display when they try to philosophize. "[T]he mind is what the brain does ..." So our author obviously believes or, rather, assumes. But one should nor base an argument on a mere assumption.