Category Archives: Bad Math

Once again, Sal and Friends Butcher Information Theory

I haven’t taken a look at Uncommon Descent in a while; seeing the same nonsense
get endlessly rehashed, seeing anyone who dares to express disagreement with the
moderators get banned, well, it gets old. But then… Last week, DaveScott (which is, incidentally, a psueudonym!) decided to retaliate against my friend and fellow ScienceBlogger Orac, by “outing” him, and publishing his real name and employer.
Why? Because Orac had dared to criticize the way that a potential, untested
cancer treatment has been hyped recently
in numerous locations on the web, including UD.

While reading the message thread that led to DaveScott’s “outing” of Orac, I came
across a claim by Sal Cordova about a new paper that shows how Greg Chaitin’s work in
information theory demonstrates the impossibility of evolution. He even promoted it to
a top-level post on UD. I’m not going to provide a link to Sal’s introduction
of this paper; I refuse to send any more links UDs way. But you can find the paper at
this
site
.

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Misrepresenting Simulations

Yet another reader forwarded me a link to a rather dreadful article. This one seems to be by
someone who knows better, but prefers to stick with his political beliefs rather than an honest
exploration of the facts.

He’s trying to help provide cover for the anti-global warming cranks. Now, in light of all of the
data that we’ve gathered, and all of the different kinds of analyses that have been used
on that data, for anyone in the real world, it’s pretty undeniable that global warming is
a real phenomena, and that at least part of it is due to humanity.

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Turing Equivalent vs. Turing Complete

In my discussion with Sal Cordova in this post, one point came up which I thought was interesting, and worth taking the time to flesh out as a separate post. It’s about the distinction
between a Turing equivalent computing system, and a Turing complete computation. It’s true
that in informal use, we often tend to muddy the line between these two related but distinct concepts. But in fact, they are distinct, and the difference between them can be extremely important. In some sense, it’s the difference between “capable of” and “requires”; another way of looking at it is
“sufficient” versus “necessary”.

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Stupidity from our old friend Sal

Over at [Dispatches][dispatches], Ed Brayton has been shredding my old friend Sal Cordova.
Ed does a great job arguing that intelligent design is a PR campaign, and not
a field of scientific research. Ed does a fine job with the argument; you should definitely click on over to take a look. But Sal showed up in the comments to defend himself, and made
some statements that I just can’t resist mocking for their shallow stupidity and utter foolishness.
[dispatches]: http://scienceblogs.com/dispatches/2007/01/answering_cordova_on_ids_goals.php

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Giving IDists too much credit: the Pandas Thumb and CSI

Being a Nice Jewish BoyTM, Christmas is one of the most boring days of the
entire year. So yesterday, I was sitting with my laptop, looking for something interesting to read. I try to regularly read the [Panda’s Thumb][pt], but sometimes when I don’t have time, I just drop a bookmark in my “to read” folder; so on a boring Christmas afternoon, my PT backlog seemed like exactly what I needed.
[One of the articles in my backlog caught my interest.][pt-sc] (I turned out to be short enough that I should have just read it instead of dropping it into the backlog, but hey, that’s how things go sometimes!) The article was criticizing that genius of intelligent design, Sal Cordova, and [his article about Zebrafish and the genetics of regeneration
in some zebrafish species.][sc] I actually already addressed Sal’s argument [here][bm-sc].
[pt]: http://www.pandasthumb.org
[pt-sc]: http://www.pandasthumb.org/archives/2006/11/when_ignorance.html
[sc]: http://www.uncommondescent.com/archives/1781
[bm-sc]: http://scienceblogs.com/goodmath/2006/11/bad_news_for_uncommon_descent_1.php

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Wacky Physics: It must be right, because the math works!

Over the weekend, in an attempt to cheer me up, a kind and generous reader sent me a link
[to a *really* wonderful site of crackpot science][adams]. It’s a crackpot theory about how physics has it all wrong. You see, there is no such thing as gravity – it’s all just pressure. And the earth (and all other planets) is actually a matter factory – matter is constantly created in the *hollow* center of the earth, and the pressure of all the new matter forces the earth to constantly expand. And the pressure of expansion creates the illusion of gravity. And according to the crackpot behind it all, the best part is that [*the math works!*][mathworks]
The site is the masterwork of graphic artist Neal Adams. Mr. Adams is a computer animation
guy; he’s responsible for the obnoxious bumblebee “nasonex” ad. Mr. Adams believes that in
addition to drawing comic books and animated TV commercials, he’s also a genius who’s going to
totally reinvent all of physics, and show how all of those bigshot physicists and geologists are all wrong about everything.
[adams]: http://www.nealadams.com/morescience.html
[mathworks]: http://www.nealadams.com/PhysicsOfGrow.html

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Really Silly Wine Woo

While there’s nothing mathematical about this bit of silly woo, I couldn’t resist mocking it. There’s a Japanese inventor who claims to have created a device that instantly ages wine through a magical homeopathic-sounding process of magically restructuring water molecules.
For why I can’t resist… Well, you see, I’m a
bit of a wine nut, and I’m particularly passionate about one very special wine: vintage Port. The problem with vintage Port is that it’s pretty close to undrinkable when it’s young; it needs to sit and age for at least a decade; 20 to 30 years is better for a really good one. Buying it aged for that long is very expensive (I’ve paid as much as $210 for a particularly good bottle of 1970 port that I used for my Y2K New Years Eve party); and waiting for it to age in the basement is both frustrating and tricky. (If it gets too warm, it can be ruined; if it gets too damp, the cork can rot and ruin it; if it gets too dry, the cork can shrink and ruin it.) So anything that could *really* accelerate the ageing process without wrecking the wine is something that I would really love to see.
There are two links for this. First, [a short NYT piece](http://www.nytimes.com/2006/12/10/magazine/10section4.t-8.html?_r=2&oref=login&oref=slogin):
>As liquor ages, Tanaka explains, the water molecules slowly rearrange themselves more closely around
>the alcohol molecules, giving the alcohol its distinctive mature taste. Tanaka puts that process into
>overdrive. He pours the wine into a 70-pound container outfitted with an electrolysis chamber. A
>few-second electrical zap gives the wine a slight charge, which breaks up the water molecules and
>allows them to blend more completely with the alcohol. VoilĂ : Instantly-aged pinot noir, “smoother and
>more mellow than before,” Tanaka’s American partner, Edward Alexander, claims.
Pure bullshit. In wine, what you’re going for in the aging process is breaking down tannins. Tannins are
a compound that come primarily from the skins in red wines. When you drink a young red wine, and there’s a bitterish bite, and a sensation that the wine is drying your mouth, that’s coming from the tannins. Over time, some the tannins are decomposed, and settle out of the wine as sediments in the bottle. The end result is that there’s less of the hard biting tannin, and you can taste the wine. The big tradeoff is that the parts of the grape that give a red wine the most flavor are the same parts that contribute the tannins. So most good red wines are very tannic when young, and they need to be
aged for a while to allow enough of the tannins to break and settle.
As always, though, there’s some tradeoff. The organic chemicals that can give wine a fruity flavor
also break down as the wine ages. So if you like the fruity flavor of a wine like a good red Zinfandel (note the **red** in that statement!), you have to drink it young. The usual trick for that is to open the wine, and “let it breathe” – that is, let it sit open to the air for a while. The oxidation process that happens when you expose wine to air will start to break down the tannins, so that the wine will be less harsh.
None of this is magic; none of it has anything to do with any homeopathy-like woo about clustering water molecules around alchohol. It’s relatively simple organic chemistry.
So guess what these guys have done? They’ve invented a machine that bubbles the wine through a bunch of hoses with some air and passes electricity through it. The important part is “bubbles through a bunch of hoses with some air”. They’re just doing a quicker version of the “letting it breathe” thing, and attaching some silly woo to explain why you need their fancy expensive machine to do it.
Anyway – here’s the *real* prize. They did a [promotional *cartoon* about their gadget,][cartoon] complete with
woo-babble about charging water with “positive electricity” and wine (I think they meant alchohol) with “negative electricity” in order to make the water be attracted to and cluster around the alchohol.
[cartoon]: http://www.salon.com/ent/video_dog/ads/2006/12/11/wine/index.html

Interesting Parallels: The Leader Election Problem and Notch Receptors

Yesterday at Pharyngula, PZ posted a description of his favorite signaling pathway in developmental biology, the [Notch system.][notch] Notch is
a cellular system for selecting one cell from a collection of essentially indistinguishable cells, so that that one cell can take on some different role.
What I found striking was that the problem that Notch solves is extremely similar to one of the classic problems of distributed systems that we study in computer science, called the leader-election problem; and that
the mechanism used by Notch is remarkably similar to one of the classic
leader-election algorithms, called the [Itai-Rodeh algorithm][ir].
[notch]: http://scienceblogs.com/pharyngula/2006/12/notch.php
[ir]: http://citeseer.ist.psu.edu/itai81symmetry.html
Before I go into detail, I think it’s worth throwing a bit of a dig at
some of the IDist type bozos. This is very much the kind of thing
that IDists look for; they try to find natural systems that strongly
resemble designed systems, so that they can assert that the natural
system must have been designed. But the people allegedly doing ID
research *don’t bother to study the fundamental science*. No one in
ID-land is studying developmental biology, to really understand
the complex signaling pathways, and what I would call the algorithmic
way that they operate. I think it’s quite damning to their arguments
that they don’t study this; but I also think I know *why*. If you
read PZs article, and you starting looking in depth into developmental
pathways, and understanding how they fit together, and how very small
changes in a process can produce drastically different results – well, it
really sort of pulls the carpet out from under the ID argument. You can really see just how these systems evolved in terms of gradual changes. Just look at Notch – how simple the behavior is, how widely it’s used to produce very *different* kinds of differentiation, and how easily the
process can be perturbed to produce different results.

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Shrinking Sun (Part 2)

So, as promised, it’s time for part two of “The Creationists and the Shrinking Sun”.
The second main tack of the creationists and the shrinking sun is to *not* use the bare
measurements of an allegedly shrinking sun as their evidence. Instead, they use it as
evidence for a very peculiar theory. It’s an interesting approach for a couple of reasons: it
actually *proposes a theory* (a bad theory, but hey, at least it’s a theory!); it uses some recent theories and observations as evidence; and it casts the whole concept of how the sun works as part of an elaborate conspiracy to prop up evolution.

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Shrinking Sun (Part 1)

One of the more pathetic examples of bad math from the creationist camp is an argument based on the
claim that the sun is shrinking. This argument has been [thoroughly
debunked](http://www.talkorigins.org/indexcc/CE/CE310.html) by other folks, so I haven’t bothered to
add my two cents here at GM/BM. I hadn’t heard anyone mention this old canard until
recently, when a reader wrote to me to ask if I could comment on it. I *hate* to disappoint
my readers, and this is *such* a great example of flaming bad math, so I figured what the heck. So hang on to your hats, here it comes!
There are a lot of [different](http://www.answersingenesis.org/creation/v11/i2/sun.asp) [variants](http://www.evcforum.net/cgi-bin/dm.cgi?action=msg&f=2&t=138&m=1) of [this](http://www.creationism.org/ackerman/AckermanYoungWorldChap06.htm) [argument](http://www.icr.org/index.php?module=articles&action=view&ID=165) out there. There are two main forms of this argument; there’s one version that focuses on extrapolating measurements of
the sun, and the more complicated one that adds in an explanation of the shrinkage and tries
to use neutrino measurements as a support. I was going to cover both in this post, but it was getting way two long, so in this post, I’m going to stick to the first naive argument, and then in my next post, I’ll cover the second.

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