Uncommon Descent Serving The Intelligent Design Community
Author

Cornelius Hunter

How Proteins Evolved

Fifty years ago molecular biologists began to uncover the inner workings of the cell and one of their profound discoveries was that genetic information, stored in the double helix DNA molecule, was translated according to a code to produce a string of amino acids which, after being hitched to each other like train cars, folded up to produce a protein that did something useful in the cell. Interestingly, a given protein’s amino acid sequence was found to have some degree of flexibility. Hemoglobin proteins, for instance, across different species revealed quite a few changes to the sequence while still functioning as a hemoglobin.  Read more

Back to School Part IX

We continue to examine the work of authors George Johnson and Jonathan Losos in their biology textbook, The Living World ((Fifth Edition, McGraw Hill, 2008). In their chapter on evolution and natural selection, these accomplished evolutionists begin by (1) misrepresenting the relationship between microevolution and macroevolution and biological variation here, (2) making a non scientific, metaphysical, truth claim that just happens to mandate the truth of evolution here, (3) making the grossly false statement that the fossils themselves are a factual observation that macroevolution has occurred here and here, (4) making a series of misrepresentations by carefully selecting the evidence to provide to the student and protecting it with circular reasoning here, (5) misrepresenting the molecular evidence here, (6) presenting Read More ›

Elliott Sober and the Enemy

Politicians and football coaches understand that what motivates people is an enemy. What better way for a leader to solidify support than by war with an evil foe. Internal failings and scandals fade in the light of an external threat. Whether it is nazism, communism or terrorism, there always seems to be an appropriate “ism” to capture and focus our attention.  Read more

Arsenic-Based Biochemistry: Turning Poison Into Wine

Being an evolutionist means there is no bad news. If new species appear abruptly in the fossil record, that just means evolution operates in spurts. If species then persist for eons with little modification, that just means evolution takes long breaks. If clever mechanisms are discovered in biology, that just means evolution is smarter than we imagined. If strikingly similar designs are found in distant species, that just means evolution repeats itself. If significant differences are found in allied species, that just means evolution sometimes introduces new designs rapidly. If no likely mechanism can be found for the large-scale change evolution requires, that just means evolution is mysterious. If adaptation responds to environmental signals, that just means evolution has more Read More ›

Back to School Part VIII

We continue to examine the work of authors George Johnson and Jonathan Losos in their biology textbook, The Living World ((Fifth Edition, McGraw Hill, 2008). In their chapter on evolution and natural selection, these accomplished evolutionists begin by (1) misrepresenting the relationship between microevolution and macroevolution and biological variation here, (2) making a non scientific, metaphysical, truth claim that just happens to mandate the truth of evolution here, (3) making the grossly false statement that the fossils themselves are a factual observation that macroevolution has occurred here and here, (4) making a series of misrepresentations by carefully selecting the evidence to provide to the student and protecting it with circular reasoning here, (5) misrepresenting the molecular evidence here, (6) presenting Read More ›

Eugene Koonin: The Pot Calls the Kettle Black

A paper written by an evolutionist from earlier this year, erroneously claiming to confirm common descent, has now been rebuked by other evolutionists. Unfortunately this is not a healthy sign of evolutionists turning to science, for the new paper is just as unscientific as the first.  Read more A paper written by an evolutionist from earlier this year, erroneously claiming to confirm common descent, has now been rebuked by other evolutionists. Unfortunately this is not a healthy sign of evolutionists turning to science, for the new paper is just as unscientific as the first.A paper written by an evolutionist from earlier this year, erroneously claiming to confirm common descent, has now been rebuked by other evolutionists. Unfortunately this is not Read More ›

Chickens Have Cellular Sunglasses

When light enters your eye it triggers a sequence of actions, ultimately causing a signal to be sent to your brain. Even a mere single photon can be detected in your vision system. It all starts with a photon interacting with a light-sensitive chromophore molecule. The interaction causes the chromophore to change configuration and this, in turn, influences the large, trans-membrane rhodopsin protein to which the chromophore is attached. This is just the beginning of the cellular signal transduction cascade. But before any of this begins, in some species the incoming light has already been filtered and focused.  Read more

Ethics and the Evolution of the Synapse

Scientific mistakes are no sin, but it would be a mistake to think there is no ethical dimension to the theory of evolution. The ethical aspects of evolution are most obvious in its misrepresentation of science. Even evolutionists agree scientists are responsible for the accurate transmission of scientific knowledge to the public. And yet evolutionists consistently misrepresent science, claiming evolution is an undeniable fact. It would be irrational, they say, to think otherwise. What is striking is the degree of this misrepresentation. We’re not talking about a minor mistake or two that led to an error in the third decimal point. We’re not talking about a subtle blunder that could easily go undetected. Consider, for example, the evolution of the Read More ›

Insects Compute Optimal Flight Plans

Anyone who travels much by air knows that pilots try to ride the wind. Flights may even deviate substantially from the shortest-distance route if the wind is strong enough elsewhere. But of course the wind is not likely moving exactly toward your destination. Add to this the fact that the wind also varies with altitude, and the problem of designing the optimal route of flight becomes highly complex. It is a problem in the calculus of variations (optimizing functionals rather than mere functions) and is analogous to the optics problem of predicting the path of light through a medium with variant refractive index. But this approach requires analytical wind fields, described with functions, rather than numerically derived winds described, for Read More ›

Did Horizontal Gene Transfer Create Evolution?

It is common knowledge that evolution is supposed to be caused by random biological variation that helps with reproductive success. By definition such biological variation is more likely to be passed on to later generations and eventually to become established in a population. And, according to the theory, if such variation accumulates it leads to all kinds of biological novelties. One problem, however, is that biological variation is not for free. It arises as a consequence of sophisticated molecular machinery and this forces evolutionary theory to violate science’s dictum of simplicity. Scientific explanations should not consist of a series of coincidences and lucky strikes. In Darwin’s day the knowledge of biology was sufficiently rudimentary that this free lunch problem could Read More ›

Abusing Science

When confronted with their own religious doctrine, evolutionists are quick to deny any such thing. Evolution is based on religious claims, but after making these claims evolutionists insist their religious beliefs are entirely gratuitous. Their religious claims, evolutionists explain, are merely criticisms of design and creation. After all, we need to explain to the creationists why their ideas are not scientifically supported. The fact of evolution, on the other hand, is simply a scientific conclusion. But this evolutionary rendition is, as usual, at odds with the facts.  Read more