Electron micrograph of differentiated human nasal epithelial organoids with cilia of multiciliated cells accentuated in blue.
Credit: Julien Amat, Bao Wang.
You might expect an intelligently designed system, created by an omnibenevolent designer, to work just as effectively for everybody and not badly for some and only just adequately for others. And yet, as so often with creationism, the facts are not at all what the theory predicts. In science this would be called falsification, but for creationists it is just another inconvenient fact to be ignored or blamed on ‘the Fall’ — or even on the victim.
According to a paper just published in Cell Press Blue, the reason some people suffer more from a cold caused by a rhinovirus is not so much because of differences in the virus, but because their bodies react differently. Some take control and prevent the spread of viruses to adjacent cells of the mucous membrane lining the nasal passages, whereas other people’s bodies fail to prevent the virus spreading.
The paper is by a team at Yale School of Medicine, New Haven, CT, USA, led by Associate Professor Dr Ellen F. Foxman, PhD.
By growing organoids in vitro and infecting them with rhinoviruses, the team were able to show that whether the infection spreads depends on how quickly the infected cells are able to mount an interferon response. A good response limits the infection to just a few cells and the cold does not develop beyond a ‘sniffle’. Where the response is weak, the infection spreads and, in cases where the victim has an underlying respiratory condition such as asthma or COPD, the cold can develop into a serious illness.
Why the interferon response differs between individuals is not known with any certainty, but it could be due to a number of factors, including genetics. However, it is known that in patients with pre-existing respiratory conditions, the interferon response is inhibited.
That, of course, begs the question for ID creationists: why a system supposedly designed to protect us gets downgraded when it is most needed, and, if the difference is due to underlying genetics, why some people got better genes in this respect than others. Under the ID creationist paradigm, genes that produce any given output are deemed to hold ‘complex specified genetic information’ and, as such, are evidence for intelligent design.
Leaving aside the question of why any omnibenevolent designer would design viruses to make us sick and then design an immune response to prevent them doing so, we are left with the question of why this immune system does not always work very well and why some people have a worse version than others. If an omnibenevolent designer can design an effective immune system, why did it not give it to everyone? Does it actually want those people to suffer more from the viruses it supposedly designed?
The evolutionary explanation is, of course, straightforward, with none of the theological conundrums that plague creationism. Evolution does not seek out perfection and has no interest in equity. In the environment of an evolutionary arms race with viruses, the results are inevitably suboptimal and unevenly distributed throughout the population unless there is particularly strong selection pressure to drive the ‘best’ solution to fixation. It is also in the survival interests of viruses to tone down their victim’s responses, thereby reducing that selection pressure. The resulting trade-off and compromise is what we see today in the different responses to the same virus.





































