Showing posts with label Pharyngula. Show all posts
Showing posts with label Pharyngula. Show all posts

Saturday, 2 January 2016

Complexity, inevitability, and life — Evolution 2.0 on Unbelievable?

Listening to the latest Unbelievable? show from Premier Radio I was struck by what appeared to be a failure of imagination on the part of Perry Marshall, who was debating evolutionary biologist PZ Myers about the former's recent book, Evolution 2.0. Not being a biologist of any kind I'm unable to comment authoritatively on the actual mechanisms of evolution, but having followed PZ Myers' blog Pharyngula in the past (less so these days) I'm fairly confident he knows what he's talking about when it comes to his own subject. Perry Marshall's background, however, is in engineering and marketing, which on the face of it should make me wary of pronouncements that are outside his field of expertise.

Myers rubbished pretty much everything Marshall proposed, and given the above I'm prepared to accept that Myers is right and Marshall is wrong. The debate was fairly technical, but seemed to me to boil down to Marshall's claim that the “random” part of random mutation is insufficient to explain how evolution works (notwithstanding other aspects of evolution such as horizontal gene transfer).

At one point Marshall stated that the code in DNA could fit on a Compact Disc, and that if you eliminated “junk DNA” the code would be merely ten percent of what could fit on a CD. The core of his argument appeared to be disbelief that such a relatively small amount of information could produce the complexity we see in living organisms today. By comparison he cited the amount of code required to install modern computer operating systems such as Windows 10 and Mac OS X.

Marshall's engineering background has hampered his thinking here. Engineers who design systems, be they engines, bridges, or computer operating systems, need to specify mechanisms in minute detail (or make use of minutely detailed specifications already available) in order to make their systems work. This notion of "engineering ex nihilo" is what in my opinion leads to the essential failure-of-imagination exhibited by intelligent design proponents and creationists (of whom a disproportionately large number are engineers) — “it's all so complicated it must have been minutely designed by an intelligence of some kind.

But imagine a software programmer who has never encountered fractals is shown a picture of the Mandelbrot set, and is given the task of writing code to generate the same picture from scratch. Without knowledge of the simple equation that produces fractals the picture could indeed be generated, but I suspect the code would be somewhat large. Or imagine a manufacturer of breakfast cereal wants its packaging department to come up with a special gadget to ensure that each carton of cornflakes contains a gradation of flakes, such that the larger flakes are mostly towards the top of the carton and the smaller ones mostly towards the bottom. I'm sure such a gadget could be made, but it's not actually necessary as the cornflakes tend to sort themselves out this way on their own.

Such self-organisation is, in my view, an aspect of the discussion about complexity that is often overlooked. If things inevitably organise themselves in a particular way, trying to make them happen in other ways, against the natural order, will indeed require complex intervention. “Going with the flow” on the other hand, will often require no intervention at all. It seems to me that much of the complexity we see in nature is there because in a given environment, things tend to work out that way rather than any other, just like in a packet of cornflakes.

A small part of the Mandelbrot set
This is applicable in other systems too, such as how you organise your life. For instance, it makes sense to keep things you need regularly in designated places, so that you don't have to embark on a time-consuming search every time you need them. If you need to take something with you when you go out, you could set an alarm on your smartphone to remind you to pick it up at the appropriate time — or you could simply place the item where you will see it when you do go out.

To put this another way: don't expend energy trying to achieve things in spite of your environment. Rather, create, encourage and adjust your environment such that it allows those things to be achieved automatically. (There you go — who'd have thought a debate on evolution would lead to productivity advice and life-coaching?)

UPDATE 2016-01-04: Perry Marshall has published online his transcript of the debate, along with some restrospective comments:
http://cosmicfingerprints.com/pz-myers/
...And here's PZ Myers' response to the comments:
http://freethoughtblogs.com/pharyngula/2016/01/03/perry-marshall-2-0/

UPDATE 2016-01-10: Looks like this will run and run. Perry Marshall has responded to PZ Myers' response to his comments on his transcript:
http://cosmicfingerprints.com/pz-mcclintock/

UPDATE 2016-01-12: ...and PZ Myers further responds here:
http://freethoughtblogs.com/pharyngula/2016/01/11/everything-existing-in-the-universe-is-the-fruit-of-chance-and-necessity/ 

UPDATE 2016-01-22: Will this never end? Perry Marshalls's next shot:
http://cosmicfingerprints.com/telorexia/

...And possibly the last from PZ Myers?:
http://freethoughtblogs.com/pharyngula/2016/01/12/my-last-post-on-perry-marshall/


PZ Myers' blogpost about his encounter with Perry Marshall is here:
http://freethoughtblogs.com/pharyngula/2016/01/01/another-day-another-creationist/

Tuesday, 14 February 2012

Am I no true atheist?

I'm a bit worried about my credentials as an atheist ("gnu" or otherwise). I know who the Four Horsemen are, but I couldn't tell you which came first (was it Dennett or Harris?). Off the top of my head I can't give you the entire URL for Pharyngula, nor can I reliably list all the hosts of the Atheist Experience TV show. I know there were lots of historical figures who professed atheism, but I certainly couldn't list them.

As if these failings weren't serious enough, I find I'm also unable to recite the full title of Charles Darwin's seminal work known for short as The Origin. Surely no true atheist would fail so miserably at declaring atheism's central dogmas?

Oh wait. Atheism has no dogmas, so I've nothing to declare but my lack of belief in a god or gods.


In an amusing but spurious bit of table-turning, this morning Richard Dawkins found himself being put on the spot by Giles Fraser on the Today Programme. Dawkins was unable to reel off the The Origin's full title when challenged to do so, and for this embarrassing blanking of mind in the heat of a live radio discussion some Christians have unjustly accused him of hypocrisy.

To those Christians I would say you're missing the point. Listen to the radio piece itself:

http://news.bbc.co.uk/today/hi/today/newsid_9696000/9696135.stm

Here's the Today Programme's page on it:
Research carried out by for a secularist foundation has suggested that most of those who describe themselves as Christian in Britain have only a low level of belief and practice of the religion.

A poll carried out by Ipsos-Mori for the Richard Dawkins Foundation for Reason and Science indicated that half of those in Britain who say they are Christian rarely go to church while nearly 60% do not read the Bible.

Prof Richard Dawkins, founder of the Richard Dawkins Foundation for Reason and Science, told the Today programme's Justin Webb that most people who call themselves Christian merely "tick the Christian box".

When asked whether the figures told us anything of use, Professor Dawkins insisted it "told us an awful lot" because it puts into doubt the place of Christian practices in society such as bishops in House of Lords and the presence of faith schools.

However Reverend Giles Fraser, former Canon Chancellor of St Paul's, called the findings "extraordinary" and maintained that it was not fair to trump people's "self identification" as Christians.

He said that "there are all sorts of ways to express Christianity" and that we should not be "purging religion from the public square".
Dawkins' fumbling with The Origin's full title was cringe-making but irrelevant, and here's why. Charles Darwin's On The Origin Of Species By Means Of Natural Selection — Or The Preservation Of Favoured Races In The Struggle For Life is not a sacred text. Dawkins might have been expected, given his area of expertise, to rise to Fraser's challenge, but the fact that on this occasion he was unable to do so means nothing more than that he had a temporary memory lapse. Such lapses are not unusual — most people have them. This particular lapse doesn't mean that Dawkins isn't a "true atheist", nor does it mean the points he was making aren't valid.

Giles Fraser tried, as religionists often do, to make atheism and Christianity somehow equivalent — two sides of the same coin. They're not. Christianity has sacred scripture containing common beliefs about supernatural events and persons, along with "moral" laws and "moral" guidance. Atheism has none of these things. All atheism has is lack of belief in any deity.

The survey in question, however, shows that a majority of people who self-identify as Christians don't meet the criteria that Christianity is commonly taken to involve. They don't know the scripture, they don't hold the beliefs and they don't follow the guidance. Their self-identification should not, therefore, be taken by policy-makers as an indication that a majority of people hold to Christian beliefs, when clearly they don't. There are religious factions in government, however, who seem so desperate to preserve religion's disproportionate influence, they are willing to misrepresent what people believe.

Giles Fraser claims it's unfair to say that people who self-identify as Christians are not really Christian just because they don't know the scripture, don't hold the beliefs and don't follow the guidance. In effect he's saying that just because people who are atheists in all but name still self-identify as Christian, it's unfair to describe them as not Christian. Maybe he's right; people should be allowed to call themselves whatever they want. But this shouldn't give the government an excuse to impose "Christian" laws on a population who, despite what they say, are clearly not Christian in the generally accepted meaning of the term.

And if atheists have no dogmas, can't recite a creed, and don't read Darwin — this too is no excuse for imposing "Christian" law.

Sunday, 7 August 2011

Oh Kalamity — a cosmological debunking

The Kalām Cosmological Argument is a favourite of William Lane Craig. It's formulated in such a way as to preempt objections, though as I've previously mentioned on numerous blogposts this disingenuous wordplay — an attempt to insulate the argument from criticism — fails.

This great video is as comprehensive a take-down of the Kalām's flawed logic as we're likely to see for some time — at least until some new cosmological theory emerges from legitimate science. The analysis and arguments presented here are thorough, properly referenced and in many cases from the very mouths of the cosmologists themselves.

http://youtu.be/baZUCc5m8sE


Here's the info on the video, copied from YouTube:
We hope this is the definitive take down of the Kalam Cosmological Argument. We show how it is contradictory and that the physics being used to support it doesn't do so. We also had this video reviewed by Marcus, one of the Cosmology Advisers on Physics Forums to make sure there were no errors, his words
"I think it is excellent.Your narrator comes across as really smart and personable....I don't see any glaring errors, really amazingly good
it's charming, intelligent, visually engaging, sporadically really beautiful like the brief cut of the Hubble telescope and the volcano etc. Well-made!"
And here's what P. Z. Myers says in his Pharyngula post (credited to Skepchick) that alerted me to it:
This is a wonderful video debunking the Kalam Cosmological Argument. What I really like about it is that it takes the tortured rationales of theologians like William Lane Craig, who love to babble mangled pseudoscience in their arguments, and shows with direct quotes from the physicists referenced that the Christian and Muslim apologists are full of shit.
Watch and enjoy.

Sunday, 31 July 2011

Launching tomorrow — FreethoughtBlogs.com

This looks like an interesting development. P. Z. Myers has been dropping various hints and/or threats recently about leaving Science Blogs, and this appears to be where he's going. From the FreethoughtBlogs Facebook event page:
A new blog network is hitting the web on August 1. Led by two of the most prominent and widely read secular-minded blogs in the country – PZ Myers’ Pharyngula and Ed Brayton’s Dispatches from the Culture Wars – Freethoughtblogs.com will be THE central gathering place for atheists, humanists, skeptics and freethinkers in the blogosphere.
Freethoughtblogs will be more than just a place for people to read the opinions of their favorite bloggers. It will be a community of like-minded people exchanging ideas and joining forces to advocate for a more secular and rational world.

The network will launch Aug. 1 with a handful of blogs with many more to be added after the first three months of operation. Here are the five blogs that will lead the way:

Pharyngula. PZ Myers has built one of the most popular atheist blogs in the world. Never one to shy away from controversy, Myers has built an astonishing following over the last few years and has traveled around the world speaking to skeptical audiences. As a PhD biologist he is the scourge of creationists everywhere but he takes on a wide range of subjects in his blogging, including religious criticism, women’s rights and progressive politics.

Dispatches from the Culture Wars. Ed Brayton was raised by a Pentecostal and an atheist, sealing his fate forever as someone who is endlessly fascinated by how religion intersects with other subject, particularly science, law, history and politics. He is a popular speaker for secular organizations around the country, has appeared on the Rachel Maddow show and is pretty certain he’s the only person who has ever made fun of Chuck Norris on C-SPAN.

The Digital Cuttlefish. Cuttlefish are shy and elusive creatures; when necessary, they hide in their own ink. This particular cuttlefish has chosen as its habitat the comment threads of science, religion, and news sites, where it feeds on the opinions of those who are emboldened by the cloak of internet anonymity. Cuttlefish is an atheist, a skeptic, and is madly, passionately in love with science. The Digital Cuttlefish has, since October of 2007, been a repository of commentary and satire, usually (but not exclusively) in verse and now moves to Freethoughtblogs.

This Week in Christian Nationalism. Chris Rodda is the author of "Liars For Jesus: The Religious Right's Alternate Version of American History." Since the release of her book in 2006, Chris has been blogging at Talk2Action.org and Huffington Post about the use of historical revisionism in everything from education to legislation. Chris is now launching her own blog on Freethoughtblogs.com that will accompany her weekly podcast, This Week in Christian Nationalism.

Zingularity. Steven "DarkSyde" Andrew is a 40 something former stock and bond trader and one time moderate conservative. He grew up in the Southwest and has long been fascinated by science, particularly evolutionary biology, physics, and astronomy. He is a frequest contributor to the popular progressive website Daily Kos and now blogs at Zingularity, where legit science disappears forever down an event horizon of petty snark and cynicism.

If you would be so kind as to help us have a successful launch, please post the above information, or at least a link to the new network, on your Facebook pages, on your own blogs and in forums in which you participate that might be interested in it.

We want this to quickly become the most important gathering place for the skeptical community in the blogosphere.
The first three months' "settling in" period should give a good idea of how it will work, so watch this — that — space...

Wednesday, 13 April 2011

Debate: Is there evidence for God? William Lane Craig vs Lawrence Krauss

Another day, another debate. This one is William Lane Craig vs Lawrence Krauss, arguing the toss over "Is there evidence for God?" The topic, alas, is poorly framed. What kind of evidence? If we're talking about pretty poor evidence, then Craig has it sewn up. Indeed this was exactly the tack he took, though needlessly (and somewhat comically) dressing it up with a ridiculous equation. In effect he said, "I have some evidence. Not very good evidence, but evidence. Therefore I win."

As in his debate a few days later with Sam Harris, he succeeded in frustrating those who might have wanted him to get to grips with the important issues. Lawrence Krauss is one of the foremost scientists in the world today, and he has much interesting insight into the nature of the cosmos, and — because he's thought about these things — whether the cosmos has a god in it. But Craig simply repeated his painfully circular syllogisms ad nauseam, and the whole thing seemed like a waste of time.

Krauss, it appears, thought so too. In a substantial guest-post on P. Z. Myers' blog Pharyngula he explains why:

http://scienceblogs.com/pharyngula/2011/04/05/lawrence-krauss-vs-william-lan/

But perhaps before reading Krauss's post mortem report you should watch the debate itself (but be warned — the audio on these videos is dreadful):

Part 1 of 6 http://youtu.be/71ZhJL56bdQ

Part 2 of 6 http://youtu.be/jHHTYbusTmw
Part 3 of 6 http://youtu.be/Tutz5id90lk
Part 4 of 6 http://youtu.be/vpv5mMRFUgQ
Part 5 of 6 http://youtu.be/WVOCxP8aWIY
Part 6 of 6 http://youtu.be/Fs_pgaSrxP8

P. Z. Myers also has some things to say about the debate, this amongst them:
Also, Craig claims to be using Bayesian logic. No, he is not. Scribbling a few trivial equations on his slides does not substitute for Craig's painful ignorance of physics.
Watching William Lane Craig used to be interesting, but I've seen him do the same stuff over and over, and now he's just boring.