Education, General Science, Philosophy, Political Commentary, Science And Society

Mystery “Solved”

Scientists now have a plausible, and likely theory for what created the Burgess Shale:

By looking over hundreds of micro-thin slices of rock taken from the famous shales, the researchers have reconstructed the series of catastrophic underwater landslides of “mud-rich slurry” that killed tens of thousands of marine animals representing hundreds of species, then sealed them instantly – and enduringly – in a deep-sea tomb.

The mass death was “not a nice way to go, perhaps, but a swift one – and one that guaranteed immortality (of a sort) for these strange creatures,” said University of Leicester geochemist Sarah Gabbott, lead author of a study published in the U.K.-based Journal of the Geological Society.

I use the scare quote because that’s the word used in the headline. This kind of language, I think, is (at least partly) what bothers people who continue to rebel against evolution, and science. It is a certainty of language (like “fact,” rather than “theory”) that they consider hubristic, and arrogant. After all, when Sherlock Holmes “solved” a case, it generally was the last word, case closed.

In this case, what the word means is that scientists have come up with a plausible explanation for an event for which they’d been struggling to come up with one for a long time, and it is sufficiently plausible that there are few scientists who argue against it, thus presenting a consensus. Does it mean that they have “proven” that this is what happened? No. As I’ve written many times, science is not about proving things–scientists leave that to the mathematicians. What scientists do (ideally) is to posit theories that are both reasonable and disprovable, yet remain undisproved.

There may be some other explanation for what happened up in what is now Yoho National Park that corresponds better to what really happened, but until someone comes up with one that makes more sense, or comes up with some inconvenient indisputable fact that knocks this one down, it (like evolution itself) is what most scientists, particularly the ones who study such things for a living, will believe.

And of course, I won’t even get started on how upset some anti-science (and yes, that’s what they are, even if they don’t recognize it) types will get over the statement that one of the ancestors of humans is in that shale.

[Update a few minutes later]

Oh, the main point about which I put up this post. This is an excellent illustration of how rare are the circumstances in which we find the keys to our biological past. Those that demand that we cannot know the history of life until every creature has died on the body of its parents, perfectly preserved, are being unreasonable. To paraphrase Don Rumsfeld, we do science with the (rare) evidence that we have, not the evidence we’d like to have. There will always be many huge holes in the fabric of the evidence, barring the development of a time machine to the past. We simply do the best we can with what we have, and put together theories that best conform to it. To say that God (or whoever) did it isn’t science–it’s just a cop out. And that is true completely independently from the existence (or not) of God (or whoever).

Education, General Science, Philosophy, Political Commentary, Science And Society

Mystery “Solved”

9 Comments

Scientists now have a plausible, and likely theory for what created the Burgess Shale:

By looking over hundreds of micro-thin slices of rock taken from the famous shales, the researchers have reconstructed the series of catastrophic underwater landslides of “mud-rich slurry” that killed tens of thousands of marine animals representing hundreds of species, then sealed them instantly – and enduringly – in a deep-sea tomb.

The mass death was “not a nice way to go, perhaps, but a swift one – and one that guaranteed immortality (of a sort) for these strange creatures,” said University of Leicester geochemist Sarah Gabbott, lead author of a study published in the U.K.-based Journal of the Geological Society.

I use the scare quote because that’s the word used in the headline. This kind of language, I think, is (at least partly) what bothers people who continue to rebel against evolution, and science. It is a certainty of language (like “fact,” rather than “theory”) that they consider hubristic, and arrogant. After all, when Sherlock Holmes “solved” a case, it generally was the last word, case closed.

In this case, what the word means is that scientists have come up with a plausible explanation for an event for which they’d been struggling to come up with one for a long time, and it is sufficiently plausible that there are few scientists who argue against it, thus presenting a consensus. Does it mean that they have “proven” that this is what happened? No. As I’ve written many times, science is not about proving things–scientists leave that to the mathematicians. What scientists do (ideally) is to posit theories that are both reasonable and disprovable, yet remain undisproved.

There may be some other explanation for what happened up in what is now Yoho National Park that corresponds better to what really happened, but until someone comes up with one that makes more sense, or comes up with some inconvenient indisputable fact that knocks this one down, it (like evolution itself) is what most scientists, particularly the ones who study such things for a living, will believe.

And of course, I won’t even get started on how upset some anti-science (and yes, that’s what they are, even if they don’t recognize it) types will get over the statement that one of the ancestors of humans is in that shale.

[Update a few minutes later]

Oh, the main point about which I put up this post. This is an excellent illustration of how rare are the circumstances in which we find the keys to our biological past. Those that demand that we cannot know the history of life until every creature has died on the body of its parents, perfectly preserved, are being unreasonable. To paraphrase Don Rumsfeld, we do science with the (rare) evidence that we have, not the evidence we’d like to have. There will always be many huge holes in the fabric of the evidence, barring the development of a time machine to the past. We simply do the best we can with what we have, and put together theories that best conform to it. To say that God (or whoever) did it isn’t science–it’s just a cop out. And that is true completely independently from the existence (or not) of God (or whoever).

Political Commentary

How Clueless Is Obama About The Military?

15 Comments

This clueless:

A platoon is the smallest unit deployed outside of [special forces] operations. Sending 24 men to one theater and 15 to another would destroy unit cohesion, leave one group without an officer and be a nightmare for the next higher unit’s (the company) command, control and communication structure. You should take this story with a grain of salt — that grain being the size of the moon.

“Ready to be CiC.”

Riiiigggghhhht.

Of course, if Hillary wasn’t equally clueless, she would have called him on it–she missed a huge opportunity to embarrass him. But then, it took a couple years for Bill Clinton to learn how to throw a proper salute (IIRC). And of course, she’d have probably loved to use the story herself.

[Update in late afternoon]

Despite comments, my post title stands. The fact remains that whatever the actual story, Obama told a tale in the debate last night that was implausible on its face, for reasons that many pointed out. The fact that there was an actual story that was somewhat like it (it was a Lieutenant at the time, they were split up before they were deployed, they didn’t actually have to capture Taliban for their weapons, etc.) doesn’t change the fact that as actually related in the debate, it was clueless about the way the military works. Someone with actual military experience would have realized this, and worded it differently (and more accurately).

And the point was never that the Obama campaign fabricated the story. It was that they didn’t recognize one that seemed implausible, because they didn’t have the wherewithal to recognize it as such, and it fit their political agenda (Bush is the Worst President Ever) as was, ignoring the fact that there’s never been a time when troops had everything they needed, when they needed it, under any president.

Ace has more thoughts, and continues to call bovine excrement.

Political Commentary

Dodgy

2 Comments

Is Hillary avoiding process servers?

Doesn’t the question answer itself?

Hillary Clinton was dismissed as a co-defendant in the case at a hearing in April, 2007 because of democrat Appellate Court Judges’ support of her belated effort to seek the protection of California’s Anti-SLAPP law. At that hearing, trial court Judge Aurelio Munoz admonished David Kendall by telling him unequivocally that any effort to deny Senator Clinton’s testimony as a witness in the case would be “Dead on Arrival”. To emphasize his point, the Judge followed his statement by saying “Did you hear that Mr Kendall?”

In typical Clintonian hubris and contempt for the judicial process, Hillary had her diminutive counsel with the over inflated ego state to Paul’s lawyer, Colette Wilson, that none of the three lawyers of record representing Hillary in the case would accept a witness subpoena for her deposition on her behalf.

It doesn’t seem like it should be all that hard. Just show up at a campaign event, ask her for an autograph, and hand it to her. Then announce that she’s been served. Be sure to have a confederate with a videocam, though.

Education, General Science, Popular Culture, Science And Society

An Evolutionary Golden Oldie

21 Comments

In light of the decision of my current home state, Florida, to teach evolution as “only a theory” (as though there’s something wrong with that), I thought that I’d repost a post from early on in the blog. You can no longer comment on it there, but you can here, if anyone is inclined. Here is the repost:

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The Jury Is In

In a post last week, amidst a lot of discussion of evolution, Orrin Judd made the mistaken claim that evolution is not a falsifiable theory (in the Popperian sense), and that (even more bizarrely and egregiously) defenders of it thought that this strengthened it.

On a related note, he also added to his list of questions about evolution a twelfth one: What would it take to persuade me that evolution was not the best theory to explain life? What evidence, to me, would disprove it? I told him that it was a good question, and that I’d ponder it.

Well, I did ponder it, and here is my response.

First of all, the theory is certainly falsifiable (again, in the theoretical Popperian formulation). If I were coming to the problem fresh, with no data, and someone proposed the theory of evolution to me, I would ask things like:

Does all life seem to be related at some level?

Is there a mechanism by which small changes can occur in reproduction?

Does this mechanism allow beneficial changes?

Can these changes in turn be passed on to the offspring?

Is there sufficient time for such changes to result in the variety of phenotypes that we see today?

There are other questions that could be asked as well, but a “No” answer to any of the above would constitute a falsification of the theory. Thus the theory is indeed falsifiable, as any useful scientific theory must be.

The problem is not that the theory isn’t falsifiable, but that people opposed to evolution imagine that the answer to some or all of the above questions is “No,” and that the theory is indeed false.

But to answer Orrin’s question, at this point, knowing the overwhelming nature of the existing evidentiary record, no, I can’t imagine any new evidence that would change my mind at this point. Any anomalies are viewed as that, and an explanation for them is to be looked for within the prevailing theory.

And lest you think me close minded, consider an analogy. An ex-football player’s wife is brutally murdered, with a friend. All of the evidence points to his guilt, including the DNA evidence. There is little/no evidence that points to anyone else’s guilt. Had I been on the jury that decided that case, it would have at least hung. I might have even persuaded a different verdict, but that’s unlikely, because I’m sure that the jury had members who were a) predisposed to acquit regardless of the evidence and/or b) incapable of critical thinking and logic, as evidenced by post-trial interviews with them.

But for me to believe that ex-football player innocent, I would have to accept the following (which was in fact the defense strategy):

“I know that some of the evidence looks bad for my client, but he was framed. And I can show that some of the evidence is faulty, therefore you should throw all of it out as suspect. I don’t have an alternate theory as to who did the murders, but that’s not my job–I’m just showing that there’s insufficient evidence to prove that my client did it. Someone else did it–no one knows who–it doesn’t matter. And that someone else, or some other someone else, also planted evidence to make it look like my client did it. It might be the most logical conclusion to believe that my client did it, but that would be wrong–the real conclusion is that it is a plot to confuse, and it just looks like he did it. Therefore you shouldn’t believe the evidence.”

Is this a compelling argument? It was to some of the jury members. And it apparently is to people who don’t want to believe that life could evolve as a random, undirected process.

The only way that I could believe that OJ Simpson is innocent at this point would be for someone else to come forward, admit to the crime, and explain how he planted all of the abundant evidence that indicated Orenthal’s guilt.

The equivalent for evolution, I guess, would be for God (or whoever) to reveal himself to me in some clear, unambiguous, and convincing fashion, and to tell me that he planted the evidence. At which point, of course, science goes right out the window.

But absent that, the evidence compels me to believe that OJ Simpson murdered his wife (as it did a later jury in the civil suit), and the evidence compels me to believe that evolution is as valid a theory as is universal gravitation.

Biting Commentary about Infinity…and Beyond!