Wow, a post here at BioLogos about Setterfield and the speed of light initiates an avalanche of responses on a plethora of issues which I cannot easily digest let alone respond to—some more thoughtful than others. And I guess I must take some responsibility for getting off topic. So let me get back on the topic of Setterfield and the speed of light.
I did seek input on Setterfield’s studies. Thank you for these responses. First, let me comment on some of the various issues and responses to Setterfield’s work.
I will not document the sources because to do so, I would need to watch his videos again, rather than browse through a book, and I am not sure even which video to start with. I have not spent the money to buy his book. But I will represent his position to the best of my memory.
Setterfield was given a book that identified that the speed of light seemed to be slowing down based on historical data. He thought he could easily dismiss that anomaly with a brief study. The study took several years, and rather than dismissing this anomaly, his studies seemed to validate it. But he still did not understand what would cause light to slow down.
Later, he found studies that showed that energy existed in a vacuum even at absolute zero—and this is called zero point energy. And zero point energy, these studies stated, has been measured as increasing over time. He decided to study this issue as well.
Why was zero point energy increasing? Setterfield posited that this was related to the expansion of the universe. When a balloon expands, energy is stored in the fabric of the balloon. When the universe expands, energy is stored in the “fabric” of the universe, and this is the source of zero point energy.
Then it occurred to him that the decreasing speed of light and the increasing amounts of zero point energy could be related. Light is slowed down as it interacts with zero point energy. The more zero point energy that light encounters, the slower it travels. Therefore, as the universe expands over time, zero point energy increases, and light slows down. But the heat involved by light travel remains constant. The heat is not generated by the speed of light, but by the amount of interactions with zero point energy.
First issue—Setterfield dismissing date contrary to his hypothesis.
There was a comment that Setterfield discounted historical studies that did not support his conclusion that the speed of light was slowing down. Setterfield states that an independent search/audit was done by academically qualified researchers to assure that all the historical data on the speed of light was in fact included and represented. On his account, due diligence was done to assure integrity in this respect. And if he is telling the truth, at least he did not intentionally leave any data out. If anyone has evidence of studies that Setterfield did not include, I would be interested in seeing such.
Another comment talked about the error bars on the historical speed of light measurements being too great.
Again, Setterfield states that the statistics that he used were submitted to professional statisticians to calculate the error bars. Their expert assessment was that the data Setterfield used to support his conclusions was within generally accepted standards, and that we cannot discount Setterfield’s study because of the older instrumentation and methods.
Another related comment was that Setterfield ignored the fact that more recent measurements with more sophisticated and precise instruments show that there is no decrease in the speed of light.
Setterfield does not ignore that. His explanation is that the earlier measurements were done using the “orbital clock”—measuring by orbital time. The more recent measurements are done using the “atomic clock” or the speed of molecular processes. And if atomic or molecular processes are related, a measurement of the relative speed of one to another will remain constant even if they are all slowing down relative to orbital time. It seems this proposition could be easily tested by someone who has expertise in this area and if Setterfield’s thesis is correct, there would be significant implications of this.
Finally, there were comments about how much more heat would be generated by light travelling at much faster speeds, and of course, the obligatory dismissive comments of how ignorant a person must be to not acknowledge that. And then there are the comments, again dismissive, that attribute a “god of the gaps” attitude to Setterfield—“God just took care of this problem.” I have never found Setterfield to use a “god of the gaps” argument.
I don’t recall that Setterfield directly addressed the issue of heat. Maybe he did, but here are my thoughts based on some of his conclusions
Setterfield does suggest that Plank’s constant is not in fact a constant, but rather that Plank’s constant times the speed of light is the real constant. So the heat generated by light travelling is not related directly to the speed of travel, but rather by how often it interacts with zero point energy. If the distance between interactions was 10 times as far at some point in the past, then light can travel 10 times as fast and create the same amount of heat (not more) than it does today.
If the heat is created by interactions between light and zero point energy, among other things, then with much less zero point energy, light could travel much faster resulting in the same amount of heat generation. That is not likely the entire solution to that problem, but it does bring up other questions. Are there likely underlying constants and physical laws that remain unchanged, but the constants may not be what we have identified as such, but some that underlay what now seem to be constants? That is at least one implication from Setterfield’s studies.
I also ponder—I don’t know much about Setterfield personally. It was intimated that his not being degreed was an indication that he had not done the hard work necessary to validate his scholarship. Well, I don’t know how hard he works. Again, it is his work that needs to be assessed. Then there are the issues of formal expertise, education and academic authority, peer review, and the related issue of accepting scientific consensus. But these are issues for another post.
Thanks again for your posts in response to my request for your input. And thanks also for the anticipated response to this post.