Tag Archives: Naturalism

News

Science News reports that habitable planets less common than previously thought

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Story from Science News. (H/T ECM)

Excerpt:

According to the most popular formation theory, planets coalesce from a swirling disk of gas and dust that surrounds young stars. Since the disk rotates in the same direction as the star, the planets spawned by the disk should revolve in the same direction. But in an overcrowded planetary system, where a gravitational game of billiards is all but inevitable, orbits can get scrambled. A close encounter between planetary siblings can push one body outward while flinging the other inward, elongating and tilting the inner planet’s orbit.

In this scenario, the solar system may have been unusually lucky. Either it avoided catastrophic gravitational encounters between massive planets or it suffered such interactions so long ago that most of the planets had the chance to resettle into nearly circular orbits with little or no tilt, says Frédéric Pont of the University of Exeter in England.

“The presence of advanced life on Earth may be contingent on our planetary system having avoided the brunt of planet-planet scatter,” keeping Earth on a circular, Goldilocks-style orbit—neither too hot nor too cold for life as we know it, he speculates.

The circularity of the orbit is crucial for maintaining liquid water at the surface. If the the planet’s orbit is too eccentric, then the temperature variations will either freeze the water, or evaporate it into the atmosphere. Either condition is fatal to complex life.

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Videos

New video takes you inside the cell to see how DNA is replicated

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Wow, this is pretty! (H/T Uncommon Descent via ECM)

If you need to understand how to explain this video in the context of intelligent design, see my previous posts on the building blocks of life and the origin of biological information. I find it useful to draw up the probability calculations for your friends. It’s all explained in the latter article. Fun!

Polemics

What is the scientific evidence for intelligent design?

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This article summarizes three types of evidence for intelligent design.

They are:

  1. Fine-tuning of the laws of physics to allow for advanced life
  2. Information in life
  3. Irreducible complexity

(Not discussed in the article are three other mainstream scientific arguments against naturalism, from the origin of the universe, habitability-observability convergence and the sudden origin of body plans in the fossil record)

Recall that intelligent design is based on the notion of specified complexity. A sequence of symbols is complex if it is composed of a large number of symbols. It is specified if it conforms to an independent pattern. If it is large and conforms to a pattern, then it exhibits specified complexity. Sequences that exhibit specified complexity are designed.

Examples:

  • Neither complex, nor specified: “AB”
  • Complex, not specified: “AB KN IH KML NIFCS YDH HOEHS KFSA”
  • Specified, not complex: “The”
  • Complex and specified: “Obama is the worst president ever”

Now you know more about intelligent design than 99.9% of journalists who bash intelligent design.

Here’s a snap shot of each of three basic arguments for intelligent design:

Fine-tuning

The fine-tuning of the laws of physics and chemistry to allow for advanced life is an example of extremely high levels of CSI in nature. The laws of the universe are complex because they are highly unlikely. Cosmologists have calculated the odds of a life-friendly universe appearing by chance are less than one part in 1010^123. That’s ten raised to a power of 10 with 123 zeros after it! The laws of the universe are specified in that they match the narrow band of parameters required for the existence of advanced life.

The Origin of Life

Studies of the cell reveal vast quantities of biochemical information stored in our DNA in the sequence of nucleotides.  No physical or chemical law dictates the order of the nucleotide bases in our DNA, and the sequences are highly improbable and complex. Moreover, the coding regions of DNA exhibit sequential arrangements of bases that are necessary to produce functional proteins. In other words, they are highly specified with respect to the independent requirements of protein function and protein synthesis.

Irreducible complexity

One easily testable form of CSI is irreducible complexity, which can tested and discovered by experimentally reverse-engineering biological structures through genetic knockout experiments to determine if they require all of their parts to function.  When experimental work uncovers irreducible complexity in biology, they conclude that such structures were designed. This method has been used to detect irreducible complexity in a variety of biochemical systems such as the bacterial flagellum.

Now you know what the word “intelligent design” really refers to. Notice that it has absolutely nothing to do with religion, in much the same way as atheism nothing to do with science.