I quite agree, but basically I worked two hours on that update (a case of "work expands to fill the time available") and by the time I got to the end, even though I felt uneasy about the hook, I thought, what the heck, I can't spend any more time on this today.

IIRC the statement "immune" appeared in the original article but it was clearly hyperbole and I probably shouldn't have used it, or else should have put it into quotation marks. It was just a matter of running out of puff really, and if I'd been posting the update myself I probably would have done something to smarten it up a bit too.