You missed the words “local area” in that piece. The first humans in the Americas did indeed appear suddenly. One day there were no humans in the Americas and the very next day a canoe load of humans had landed from the Asian mainland. Species evolve in one place and then spread to other places. All those other places see sudden appearance. You missed a very obvious point with that “local area” specification.
I think you’re barking up the wrong tree. When Gould says “it appears all at once and ‘fully formed’”, it has nothing to do with migration. Nice try, but no cigar.
In the paragraph previous to that quote, Gould says,
“Niles Eldredge … and I have been advocating a resolution to this
uncomfortable paradox … The modern theory of evolution does not require gradual change … It is gradualism that we must reject, not Darwinism” (
The Panda’s Thumb, p.182).
The “uncomfortable paradox” he refers to is alluded to earlier in the chapter - ie, “the
embarrassment of a [fossil] record that seems to show so little of evolution directly … I wish only to point out that it [the gradualism predicted by Darwin] was
never ‘seen’ in the rocks. We [paleontologists] fancy ourselves as the only true students of life’s history, yet to preserve our favored account of evolution by natural selection we view our data as
so bad that we
almost never see the very process we profess to study .” (pp. 181-182. Emphasis added
).
Here are some more Gould quotes in the same vein:
“Three billion years of unicellularity, followed by five millions years of intense creativity [the Cambrian explosion] and then capped by more than 500 million years of variation on set anatomical themes can scarcely read as a predictable, inexorable or continuous trend towards progress or increasing complexity [as predicted by Darwinian theory]” (S.J. Gould,
The Evolution of Life on the Earth, Scientific America, Vol. 271, No.4, October 1994, p.67)
“… we must understand that [in the fossil record] nothing happens most of the time – and
we don’t because our stories don’t admit this theme … The Burgess Shale teaches us that, for the history of basic anatomical designs, almost everything happened in the geological moment [ie, the Cambrian explosion] just before, and almost nothing in more than 500 million years since.” (S.J. Gould,
A Web of Tales , Natural History, Oct 1988, pp.16-23)
“Every paleontologist knows that most species don’t change. That’s bothersome … brings great distress … They may get a little bigger or bumpier, but they remain the same species, and that’s not due to imperfection and gaps but stasis. And yet this remarkable stasis has generally been ignored as no data. If they don’t change, it’s not evolution, so you don’t talk about it.” (S.J. Gould, Lecture at Hobart and William College, 14/2/1980)