Percy:
So you're saying that we *have* made empirical observations of evolution, albeit in a devolving environment.
It is called 'Natural Selection'. If we can agree to that, then unquestionably... I have three children and they are not clones.
Rob:
And what is particularly telling, is the problem of origin, in that, evolution (as an assumed universal trait; cosmologically or biologically) does not show itself in any form that is emperical.
Percy:
And now you're saying that we've never made empirical observations of evolution, including biologically.
No, I am referring specifically to the problem of origin, in that it is assumed even by the work going on in the RNA world that life did not sponaneously arrive as 'whole' even on the level of single celled organisms, but occured through some as yet unknown self replicating mechanism which consists of an unspecified series of changes (ie evolution).
This discussion... has, in a sense, focused on a straw man; the myth of a self-replicating RNA molecule that arose de novo from a soup of random polynucleotides. Not only is such a notion unrealistic in light of our current understanding of prebiotic chemistry, but it should strain the credulity of even an optimist's view of RNA's catalytic potential...Without evolution it appears unlikely that a self replicating ribozyme could arise, but without some form of self-replication there is no way to conduct an evolutionary search for the first, primitive self-replicating ribozyme.
(source / Darwin's Black Box / Joyce, G.F., and Orgel, L.E. (1993) "Prospects for Understanding the origin of the RNA World" in The RNA world, ed. R.F. Gesteland and J.F. Atkins, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, p. 13.)
So yes, we have emperical evidence of the one, but not the other. It is simply assumed to be a universal trait- since it happens here, it must have happened there.
As Jonathan Wells said, "Natural selection can explain the survival of the fittest, but it cannot explain the arrival of the fittest."
What you guys are saying is that because we
can see all of this emperically verified evidence of apdaptation here, we are then able to see (though not emperically) what actually is over there. And even though it is not proven, we can proceed with robust confidence.
Do you concur?
Edited by Rob, : No reason given.
Edited by Rob, : No reason given.