Plate Tectonics Redux

A while ago I wrote a rather sarcastic post on plate tectonic denialists. I got a reply from Harry Dale Huffman, who claimed that plate tectonics was easily disproved and directed me to one of his blog posts. Go take a minute and read it. I'll be waiting after the jump.

Okay. Done with that? Let's talk about it. First I want to discuss warning signs, then logistical problems, and finally the actual content of the post. Maybe I should do this in reverse order, but at the moment I don't want to do it that way. I'll say at the beginning this is not an ad hominem, because I will discuss the actual content of his claims, but, if you want to claim poisoning the well...I'll partially accept it. However, I do believe that Mr. Huffman falls into the larger category of, to put it bluntly, quacks. If you read through that post, you get a lot of references to paradigm changes, that this is obvious if only people open their eyes, that these has been denied or dismissed by scientists, etc, etc. This should be a red flag for most people, it's the kind of language that you hear most often among the quack or pseudo-scientific community, be it evolution deniers, climate change deniers, HIV-AIDS deniers, etc. This is not to say that Mr. Huffman is not an intelligent man and cannot do actual research. I am sure he is quite competent, but it is to say that in this particular area, he is a bit of a quack.

It is interesting, if not particularly surprising, that many intelligent design supporters tend to be engineers. People who actually work in the field of biology see through ID rather quickly and don't accept arguments about design because, very simplistically, biological units don't follow the same rules and processes of man-made objects. There are some superficial similarities, of course, but deeper study reveals that this is a false analogy. Call it a special case of functional fixedness - after working for so long on design and being trained to look for elements of design, it isn't hard to see that these people often try to import their views on design into natural systems. So, yes, we tend to be rather wary when people start talking about design in natural systems - it hasn't really panned out yet.

As to logistical problems - there are a few problems. First, he claims that "seeing is believing." The short response to this is easy: "Wrong." The more detailed response is, as should be expected, more complex. Indeed, in some ways, seeing is believing. However, it is very easy to be wrong about what you believe, or what you believe you are seeing. Optical illusions are the easiest example of this - I would presume that Mr. Huffman would not argue that these illusions represent the reality of the situation. Likewise, perhaps Mr. Huffman would like to look at the Face on Mars (from the 1970's observation) and explain why that is or is not evidence of advanced civilizations and design on Mars. Perhaps Mr. Huffman also believes that the fractal patterns of ice crystals is also evidence of intelligent design of ice, or perhaps not. I would also question him about just how far he wants to take this statement - should we deny the rest of the electromagnetic spectrum outside of visible light because it is not readily apparent to the naked eye? Also, if this were really so evident as Mr. Huffman wants to claim, why is it that only he has noticed it, and that this "evidence" has completely escaped the best minds of the planet for centuries? This is a rather common issue among quacks - they always claim some secret knowledge that is "readily apparent," "completely obvious," "denied by modern science," and "discovered by hard work under the oppression of the establishment."

On another point, Mr. Huffman isn't really clear about how the whole movement of continents worked in the past and why it won't continue now. He doesn't deny that the continents have moved, he merely wants to argue that they have been purposefully moved and now, apparently they have stopped moving. As that I've gotten a lot of hits on this blog from the last plate tectonics post, and as that most of those hits are from queries that are looking for evidence specifically to disprove plate tectonics, I think it is important review some of that evidence here. This does not necessarily bear directly on Mr. Huffman's arguments, as he does not seem to deny previous continental movement, but we'll get to that.

First, we have the overall shapes of the continents. It isn't hard to see that they seem to be pieces of a large jigsaw puzzle and that they could be all fitted together. This was the original impetus for the theory of continental drift, but originally there was no mechanism identified for why the continents should move. Secondly, we have fossil distribution. The distribution of fossils of the same type and same edge along the edges of continents (and sometimes across continents like Antarctica) only makes sense with the assumption that at some point in the distance class the continents were either connected or vastly closer together. Third we have paleomagnetism. When a rock is formed, its magnetic alignment is frozen. We can see that looking at rocks of a certain age, if we draw the lines of their alignment now, they align somewhere in space above the earth, or are misaligned. If we assume the same continental placement/distribution that makes fossil dispersion make sense, then the magnetic alignments converge on the poles. This is a nice finding. We also have the evidence of the distribution and types of earthquakes and volcanoes - the majority occur along the proposed plate lines and actually serve to define these lines rather well. Likewise, at the proposed sites of new upheaval, such as the Mid-Atlantic Ridge, we see the expected gradient of age in rocks as you move further from the Ridge. That is to say, the youngest rocks are along the ridge and they get progressively older the farther away you move from the ridge. Likewise, we have the continued growth of mountain ridges where plates are grinding against one another. There are also symmetrical magnetic bands on either sides of these ridges, showing evidence of the previous polarity reversals and weakenings in earth's history. These are all converging lines of evidence that point towards the movements of the continents, and point toward plate tectonics, but as that Mr. Huffman does not directly disagree with previous movement of continents, they do not particularly bear on his points.

However, Mr. Huffman does want to deny current or future movement. He argues that the mechanisms of plate tectonics are physically impossible. Currently, the mechanism is described as convection zones of heat underneath the crust. This heat originates from (in a very small way) residual heat from the formation of the earth, and, more importantly, from the continued radioactive decay within the earth. A large problem with Mr. Huffman's ideas is that he would have to account for how this heat is going to be released if not through the movement of the plates. A bigger problem is whether or not he have a mechanism at all for previous movement, if not from the release of this built up heat. I would be very interested to know his ideas on how previous movement occurred and why it should stop now without catastrophic results, or perhaps he intends this.

Mr. Huffman's main argument seems to be a recapitulation of Pythagorean and Platonic ideas about geometric shapes and how they are reflected in the world or universe. Johannes Kepler struggled with this idea for a long time before eventually rejecting it - realizing that no matter how much the mathematics, design, and beauty of it all looked, the evidence just didn't back it up. I think this is largely the same case. Mr. Huffman wants the design to work out so badly that he's willing to flub some of his "data." Look again at his drawing of the prime lines that bisect the globe. Notice how there's not really much consistency in how far away some of these lines stray from the actual coast lines. Some are very close or even cross land, while others are pretty far into the ocean. His "Asian" line is drawn out to the coast of Japan, while his "African" line avoids Madagascar. Why are islands considered part of the coast line only some of the time? Why are his South American and North American lines allowed to cross land at certain points? Why is the Gulf of Mexico's coast line ignored while cowing the importance of the line's proximity to the Yucatan peninsula? Why, after discussing how important it is that these lines align along the east coasts of landmasses, does he note the importance of how close the fifth line comes to the ~west~ coast of New Zealand, which is not even a continent? What does Mr. Huffman have to say about the continued movement of the continents, continued subduction, continued growth of mountain ranges along the plate lines, and continued expansion along places like the Mid-Atlantic Ridge? Why is this moment in time, when these lines are possible to draw, so important?

It seems after all of this that Mr. Huffman is perpetuating two errors - 1) Confirmation bias, and 2) anomaly hunting. First, Mr. Huffman is dismissive of any evidence that would invalidate his claims, or even where his own method doesn't particularly work (e.g., his fifth line), but is quick to jump on anything that helps his bias towards ancient geometric traditions. Secondly, Mr. Huffman's argument doesn't go much beyond "isn't this interesting?" and taking what would appear to be a coincidence (if it is even that) to something very meaningful. These sorts of anomalies are to be expected in any system that is large enough or complex enough. In fact, it would be much more interesting if they ~weren't~ present. Mr. Huffman also falls into the same sort of argument that many evolution denialists fall into - the use of odds. These are almost always red flags and are typically quite misleading. Let us look at any crystal formation - the odds of each atom being in exactly the place it occupies is extremely low. The odds of being able to place, at random, each atom into its correct position are so low as to be past the point of being fathomable. However, these crystals exist - they have to take some state. This sort of argument is contained within the field of statistical dynamics, as stated in a previous post. What other system is Mr. Huffman considering when he calculates the odds of the continents being in their present location?

So, in conclusion, I would like to hear Mr. Huffman's explanation of why the continents are still moving, why mountain ranges like the Himalayas are still rising, and why new material is still appearing at mid ocean ridges, as well as to explain the inconsistencies within his own presentation. I do not agree with him, clearly, and I do not think that his case is anywhere near as self evidence as he would like to claim.