re James' recent posts . . .
Post #444 represents one massive misunderstanding of what the instrumentalist position
is, as I've explicitly characterized it. James' post is a reaction to my post #416 in which it is explicitly stated that
if one adopts the instrumentalist view then the following consequences are entailed. The entire post, then,
assumes the instrumentalist view; it is not a
defense of the appropriateness of the instrumentalist view.
At the core of instrumentalism is a
semantic --
not an epistemological -- thesis which might be captured in slogan form as "All is not what it seems".
This has already been explained, but to repeat: Statements in scientific theories containing unobservables are not to be read
literally. A statement containing the term
electron, for example, is not understood to be asserting that electrons exist.
The statement is not asserting what it seems to be asserting; it is not asserting what it would normally and pre-reflectively be taken to be asserting. The statement may be
reduced or
translated (or something similar) into that which is entirely observable,
à la some versions of logical positivism.
In short -- appearances to the contrary --
the statement is making no assertions about unobservable reality.
Likewise, according to Osiander's instrumentalist take on Copernican heliocentrism,
the theory is not asserting what it appears to be asserting. It is not to be understood
literally. It is nothing more than a "useful fiction" --
as a matter of instrumentalist semantic stipulation. (i.e. evidence has nothing to do with it.)
James' misunderstanding, evident throughout the entire post, is summarized in the following remark:
They might be useful fictions, as you say. Or they might be real. There's no way to know for sure, one way or the other, since to know would require observing the unobservable.
Notice that James introduces epistemological considerations ("There's no way to know")
into what is not an epistemological thesis. It is a
semantic thesis. Anyone who ponders the questions of whether electrons (understood in the realist sense) exist, whether there is sufficient
evidence to believe in their existence, etc.
is not adopting an instrumentalist position. And any instrumentalist (e.g. Ernst Mach) who begins to feel that
atoms, say, might actually be real and not just useful fictions
is abandoning his instrumentalist stance. That is, he has altered his semantics from a non-literal to a literal reading.
Similarly, I would suggest that post #445 constitutes a misunderstanding of PE doctrine.
It is not logically possible both that the forces driving microevolution are identical to those driving macroevolution, and that they are
not. If this constitutes an "extension" of traditional theory, then "Mrs Peacock killed the victim" constitutes an extension of "Mrs Peacock did
not kill the victim."
I wonder if James has even read Gould, Eldredge, Stanley,
et al, for every time I've been in this situation in the past it has invariably turned out that my interlocutor has not. You may be told (by Dawkins maybe) that PE is old hat and saying nothing new; you will not be told this by the proponents themselves, indeed since the above conflict represents a direct contradiction in views,
it is not even logically possible that nothing new is being claimed.
Also, Gould's punctuated equilibrium is not the "profound departure" you seem to think it is. It was a big deal in the pop science press back in the 1980s, but it has largely been absorbed into the mainstream modern synthesis in the 40 years since then. In the 80s, Dawkins and Gould went back and forth about it in their pop-science books. There was, of course, also discussion and some debate in the peer-reviewed literature back then. The wash-out was that punctuated equilibrium is mostly just evolution-as-usual happening faster than usual, under the right environmental conditions. It is also something of an illusion brought on by the incomplete fossil record.
Gould's mature views on PE are laid out in his 2002 "The Structure of Evolutionary Theory". He died shortly thereafter presumably taking these views with him to the grave. In one fascinating section, he bemoans the frequent distortion of PE doctrine. Caveat emptor.
Finally . . .
axocanth:
I get it that you think you're trying to be edgy and provocative. But when you start calling those who are kind enough to indulge you "idiotic" and dismissing their thoughts as "jawdropping stupid remarks", your act starts to grate.
Remember that this sort of thing is what saw you exit this forum in a very short time, last time you were here. Are you the guy who likes to barge in, kick up a fuss and then make the Grand Clomping Exit? If not, you might want to up your level of cordial politeness.
You can do that, I hope.
My own view, for what it's worth, supported by my recent perusal of older threads not involving myself, is that James is quite possibly the most abusive poster on the site. Impartial readers are invited to enter James' name and the words "stupid", "liar", etc. into the site's search engine and decide for themselves. Watch out for the search engine overheating!
His attitude towards myself has been repeatedly abusive, hostile, and condescending, not to mention an unfortunate habit of bloviating on subjects he obviously knows little or nothing about, thus I will be not be responding to him further. Evidently the site has an "ignore" function, for another member (Pinball) has stated that he has myself on ignore. Presumably I am entitled to do the same thing to members that I regard as abusive. Readers may also notice that his post above is "liked" by another member (exchemist) who refers to myself as a "cunt" in post #150 of this thread, with no discernible repercussions.
Civil discussion is most welcome. I've no desire to discuss anything in such a hostile atmosphere, however. Life is too short.
Er, now if someone will just be kind enough to tell me where the ignore function is . . .