Now before y'all go bashing too much on ol' James Ussher, keep in mind that his defenders include none other than Stephen Jay Gould, in his essay, "Fall in the House of Ussher" (from
Eight Little Piggies, W. W. Norton & Co., 1993).
Stephen Jay Gould said:
I shall be defending Ussher's chronology as an honorable effort for its time and arguing that our usual ridicule only records the lamentable small-mindedness based on mistaken use of present criteria to judge a distant and different past [...]
Gould, of course, doesn't support Ussher's
date, which is easily falsifiable and false, but he applauds Ussher's
work, given that he started from false premises, through no fault of his own.
Stephen Jay Gould said:
What of the scientists who assumed that the continents were stable, that the hereditary material was protein, or that all the other galaxies lay within the Milky Way? These false and abandoned efforts were pursued with passion by brilliant and honorable scientists.
Nor did Ussher simply add up the ages of people mentioned in the Bible. As Gould points out, that method starts to break down around the time of Solomon, and fails utterly once you reach the end of the Old Testament. Basically, it's a dead end, and Ussher didn't even bother with it. Gould does discuss his methods, but I won't bother, because it's irrelevant here.
Beyond that, though, Ussher's goal doesn't seem to have been to establish the date of creation. That was simply
one step in his goal to create a framework for studying and analyzing
all human history. And here Gould quotes historian James Barr (see Gould's bibliography for details).
James Barr said:
The Annales are an attempt at a comprehensive chronological synthesis of all known historical knowledge, biblical and classical... Of its volume only perhaps one sixth or less is biblical material.
(Emphasis mine.)
So, diss the Young Earth Creationists all you want. They don't have any excuse for their deliberate and wilful ignorance and blind stupidity. But don't try to lump poor Bishop Ussher in with that pack of idiots. It's not his fault that his attempt at good scholarship has been adopted by a pack of loons.