Re: Stephen Wolfram vs. Charles Darwin on natural selection
- From: r norman <r_s_norman@xxxxxxxxxxxx>
- Date: Sun, 7 Dec 2008 14:32:03 -0500 (EST)
On Fri, 5 Dec 2008 13:47:14 -0500 (EST), Lorentz
<drosen0000@xxxxxxxxx> wrote:
On Dec 4, 1:24=A0pm, r norman <r_s_norman@xxxxxxxxxxxx> wrote:
On Wed, 3 Dec 2008 12:05:35 -0500 (EST), Tim Tylerlpg=3D3DPA100
<seemy...@xxxxxxxxxxxxxx> wrote:
On Dec 3, 6:36 am, r norman <r_s_norman@xxxxxxxxxxxx> wrote:
On Mon, 1 Dec 2008 13:43:04 -0500 (EST), Tim Tyler
Right - but Richard Dawkins made no claim of uniqueness.
If you look at his specification, what it says is:
``It is important to specify that both books describe their
=A0respective animals 'down to the same level of detail'.
=A0Obviously, if we describe the millipede down to cellular
=A0detail, but stick to gross anatomical features in the case
=A0of the lobster, the millipede would come out ahead.
=A0 -http://www.skeptics.com.au/articles/dawkins.htm
=A0 -http://books.google.com/books?id=3D3DDwD4bjQozgYC&pg=3D3DPA100&=
w
Without any description =A0of just what detail must be included and ho=
esunique the description must =A0be, the notion of complexity simply mak=
no sense whatsoever. [...]
It is just like Kolmogorov complexity - where you need to specify the
descriptive language. =A0The language isn't built into the whole idea -
simply because there are many languages and different ones are
appropriate under different circumstances.
In Richard's example you DO need to specify the "level of detail" -
but you DO NOT need to specify how unique the resulting description
must be.
So the question remains: =A0is "length of a description" at all a useful
measure of complexity for an organism, even as a rough measure? =A0Is
there any way of describing very different kinds of organisms "down to
the same level of detail"? =A0
I think one can't until one defines what an individual is. A group of
organisms is more complex than an individual organism. The size of the
description may be the same for 8 paramecia or a volvox with 8 cells.
So if I see an increase in complexity, is it aa increase in complexity
per organism or a decrease in number of organisms?
Think siponophores. Is the siphonopore individual just a complex
jelly fish, or is it a colony of simple jellyfish?
Exactly. How can you compare the "level of detail" when describing
all of life, from bacteria to highly specialized animals? Even
limiting the problem to animals, what "level of detail" is needed to
describe a parasite with greatly reduced organs and organ systems but
with a complex life cycle involving multiple life stages with
different required hosts? How does that compare with a social insect
life a leaf cutter ant? I don't think the notion of comparing
complexity makes any sense here.
.
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