You are using your own subjective opinion,
And, as you have determined, a mere personal subjective opinion is not proper scientific evidence. That is why I find the arguments from the design side unconvincing – a distinct lack of objective scientific evidence.
We don’t pretend a squirrel’s tail isn’t wonderfully suited for providing the squirrel with balance as he, e.g., climbs trees;
Indeed we do not, and what is more we have a very good explanation of how the squirrel’s tail got to be so good at helping it climb trees. I have already posted these figures before, but it will help to have a more concrete example.
Falling from trees can cause death or injury. Neither is good for the chances of that particular squirrel reproducing. Death or injury will, on average, reduce the number of offspring that squirrel has. This gives rise to differential reproductive success, meat and drink to natural selection.
Take three groups of proto-squirrels, they are not quite squirrels yet, but are a small tree-climbing rodent. There is variation between the groups. One group has an average tail for their species – the Noorms. A second group has a tail that is slightly mutated and hence not so good for climbing trees. They fall off branches slightly more than average and so have a 1% reduced number of offspring. I’ll call them the Doons. A third group has a tail with a different mutation. Their tail is very slightly
better suited to balance when climbing trees so they reproduce on average 1% more than average. This third group is the Beenies. Now let a new ground predator, say a species of fox, move into the area, so the forest floor becomes dangerous for the proto-squirrels. How well do they do when the have to live by climbing in trees?
You’ve seen it before (post #896) but here it is again. Each group starts with 100 members, and on average each Noorm will have one offspring (two per couple), each Doon 0.99 offspring and each Beenie 1.01 offspring:
Code:
Generation Doons Noorms Beenies
---------- ----- ------ -------
0 100 100 100
1 99 100 101
10 90 100 110
100 37 100 270
500 1 100 14477
700 0 100 105916
1000 0 100 2095916
Now, it is perfectly obvious to me why the squirrels that we see today have tails that are very good for balancing in trees. Any slight advantage from a random mutation in their ancestors’ tails would have spread due to increased reproductive success. Any of the many disadvantageous mutations would have disappeared – as with the Doons.
This works. It has been observed to work in the laboratory. It has been observed to work in the wild. It has been observed to work in hospitals: the Doons have 1% less resistance to antibiotics, the Noorms have normal resistance to antibiotics and the Beenies have 1% more resistance to antibiotics. That is how we get antibiotic resistant bacteria: they are all Beenie bacteria and the descendants of Beenie bacteria.
All of this is accepted by the majority of creationists – they often call it “microevolution”.
we don’t pretend that a Great White Shark’s teeth just so accidentally happen to make shredding Seal meat rather easy.
Nor do I. Natural selection is
not an accidental process. Do you think it was “accidental” that the Beenies came out ahead when they were the ones who had more offspring per generation? The sharks with the better teeth had more offspring than the sharks with the less good teeth.
rossum