We know how evolution takes place (typo's fixed)
by
JGC
07/24/2008, 1:57 PM #
The biological mechanisms of inheritance don't exhibit 100% fidelity--known natural mechanisms introduce changes into a population's gene pool at a low but non-zero frequency. These changes result in phenotypic variety within the population. Natural selection acts to conserve changes which increase relative fitness and to oppose conservation of those that decrease relative fitness with respect to the specific environment the population exploits. Over time, the serial accumulation of multiple discrete changes, each selected for with respect to environment at the time they arose, results in the creation of the biological diversity we observe.
"Nobody can thus far explain the gap, or better chasm between organic chemicals and supposedly primitive viruses, nor how a polyp of about 2 billion years ago already had nerves and muscles."
>>The gap between organic molecules, viruses and the first living organisms isn't within the scope of evolutionary theories: they only address change in populations of already living organisms, not the origin of the first life on earth--you're conflating biogenesis with evolution.
As for polyps, how is the observation that 2 billion years ago they already had nerves and muscles a problem for evolution?
"To say that the proponents of the theory of intelligent design are correct or incorrect is therefore a leap of faith."
>>What's actually being said is that there is no evidence which supports ID, and that correct or incorrect ID isn't a scientific paradigm. Until such time as ID proponents do three things (identify a reliable method to identify design in biological systems--a way to distinguish something that is designed from something that merely appears to have been designed; identify the natural mechanism or mechanisms by which the intelligent designer or designers realize their design in sufficient detail that it offers testable predictions, making ID falsifiable; identify and establish the existence of the intelligent designer, so that their model no longer violates parsimony) it isn't a scientific model and possesses no real explanatory power.