LaPalida said:
A couple of quick questions, before I respond to your posts, on some of the terms you guys are using. What is CNS?
CNS is the central nervous system. We've been suggesting that a sense of "self" first starts to show in critters that have one. Something with a CNS as primitive as a Jellyfish is hard to show subjectivity in, but I think I see it. Will, for instance, I see as subjective even if it is being dominated by, say, hormones and other biological factors. It's sort of a paradox to say something has a "self" yet is so emersed in biology or so controlled by conditioning that it can't recognize it's own self. That is why I say humans seem to be the first level of awareness to really be able to identify a self.
LaPalida said:
Les Sleeth what do you mean by a physicalist?
The term "physicalist" is used to describe the belief that all that exists has arisen from physical principles or matter. Some people used to say "materialist" but that term doesn't seem to include physical principles which aren't exactly matter.
Over in the Philosophy of Science section of PF you can find a thread I started called "Define Physical." That was a pretty good discussion because you can see that it isn't exactly clear to everyone, even scientists, what physical is. My own suggestion for a definition was "mass, the effects of mass, and the products of mass." I suggested that because if mass didn't and had never existed in the universe, you can't find any gravity, you won't find any radiation, there will be no matter.
So if you are a physicalist, you believe physicalness can produce everything. Where that idea becomes most contentious is with the formation of life, the evolution of life forms, and most of all . . . the development of consciousness.
LaPalida said:
Also need to clarify a couple of things here too. By the quote above . . .
Les Sleeth said:
There are no "facts" of evolution that show genetic variation (along with natural selection) has produced high-functioning organs or organisms
. . . do you mean that you believe in micro but not macro evolution? By high-functioning organs do you mean things like brain, heart, wings etc?
Yes, macroevolution is what's unsupported by evidence. In terms of what I "believe," personally speaking, I believe what is supported by proper evidence. Otherwise, I believe nothing.
I mentioned the hyperbole of physicalists in regard to evolution because they often gloss over the fact that there is no evidence that microevolution can produce organs. Some mentors around here, like Evo who posted earlier, will go so far as to say the "evidence is overwhelming" in favor of evolution. I don't know if she simply doesn't understand where there is no evidence, or if she is just in denial.
Stephen Jay Gould said: "All paleontologists know that the fossil record contains precious little in the way of intermediate forms; transitions between major groups are characteristically abrupt. The extreme rarity of transitional forms in the fossil record persists as the trade secret of paleontology. We 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 never see the very process we profess to study."
Personally I think if all transitional forms had been preserved, there really would be a record showing that all life evolved from the first life forms (algae/bacteria). The reason I think there is no fossil record is because the evolution of new life forms happened too fast, so there weren't enough transitional forms to ensure a fossil record.
One more bit of evidence I think that is virtually indisputable is the genetic record which clearly indicates common descent.
So if common descent is true, if all life forms did evolve from more primitive forms, then is there any reason not to extrapolate macroevoluation from microevolution?
YES! The problem is that in Darwinistic evolution theory genetic variation and natural selection are the only mechanisms we have for producing changes (well, plus how disease or changes in environmental chemistry might alter an organism). But today we cannot find evidence that genetic changes produce new organs. Bigger bird beaks, new shades of moths, longer monkey tails . . . no problem. But not organs.
Then you have the Cambrian explosion where virtually every phyla of animal first appears within a 10 million year period. There is no known mechanism for producing that quality and quantity of change. Certainly not accidental genetic variation and natural selection; they operate a billion times too slowly (at least as they are observed today) to attribute the kind and quality of changes that took place during the explosion.
Replacing phyletic gradualism with punctuated equilibrium doesn't help much either except to let evolutionists off the hook. It's like saying, "well, we can't explain it with our theory so let's say that's just how things work." The problem of course is that what caused such incredibly perfect genetic variation to produce hearts, livers and brains is not explained by saying "that's just what happened."
To those of us open to some sort of universal consciousness participating in creation, changes made at the genetic level would the perfect place for he/she/it to do so. The quality of changes are exactly the kind a human consciousness, for instance, would make if it were smart enough. In other words, if we had invented a living cell and could control its genetics, and if we wanted it to evolve new traits, where would we introduce changes? In its genes of course. So theoretically the idea makes sense.
Evolutionist believers like to complain "there is no evidence" that consciousness intervened in genetics. But the lack of evidence for macro from microevolution doesn't seem to bother them. Hmmmmm. I say it is impossible to be objective if one already believes something is true before one looks at evidence. And that is exactly what's going on with evolutionist believers, and why they can't see they shouldn't yet assume that all life evolved via microevolution.
As for me, who is not committed to believing anything, I am free to consider all theories without prejudice.
