On 9/3/2015 1:05 PM, RSNorman wrote:
> On Thu, 3 Sep 2015 09:39:30 -0700, Mark Isaak
> <
eci...@curioustax.onomy.net> wrote:
>
>> On 9/2/15 7:05 PM, Bill wrote:
>>>> [...]
>>> So DNA is just chemicals. It is merely chemicals in the same way that a
>>> microprocessor is merely silicon. Well that clears things up. Some might
>>> think that the sum is greater than its parts, but that just adds
>>> complications that might require thinking about.
>>>
>>> It could also be argued that something emerges from the chemicals that
>>> couldn't be predicted, something unexpected that the chemicals themselves
>>> can't do. Can we determine what and which each of the chemicals create the
>>> very special qualities of DNA? If DNA is just the chemical composition, how
>>> is it different from all other chemical compositions?
>>
>>
https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
>>
>> Conway's Game of Life.
>> It operates in a universe far, far simpler than this one, and still lots
>> of things emerge that couldn't be predicted, some things unexpected that
>> the elements themselves can't do.
>>
>> The only very special quality is your lack of understanding of how
>> ordinary all of this is.
>
> I had many long go-arounds with John Wilkins on this kind of emergence
> and I have come around to a large extent to what I thik his point was.
>
> What we call "couldn't be predicted" or "unexpected" has everything to
> do with our lack of imagination and insight into how particular
> combinations of elementary events might work than in having new
> scientific processes or laws "emerge". There are people who say the
> information content contained in, say, the original formation of cells
> in Conway's Life is separate from the rules by which each cell winks
> into or out of existence depending deterministically on the state of
> its neighbors. Still, watching 'objects' march across the screen,
> generating a train of new objects in their wake and behaving in ways
> that we attribute to "independent action" is an amazing experience.
I also have become skeptical of many of the uses of the term
"emergence", but that is partly because the term doesn't really have a
consistent usage. In simplest form, some properties of systems are
emergent by definition, since they are only properties of aggregations
of lower level entities, not of the lower level entities themselves.
Temperature is an example you have used before. Clearly temperature is
not unexpected and is exactly predicted by the properties of individual
molecules, but it makes no sense to speak of the temperature of an
individual molecule.
A more interesting example is turbulence. An individual molecule does
not exhibit turbulence - the property only emerges once one has a large
collection of molecules. Turbulence more closely approaches the
definition of " can't be predicted", at least to date. At least as I
understand it, we can currently create turbulence in computational fluid
mechanics, but only by recreating in the models a large number of
individual molecules that interact according to the laws of physics. We
don't have a more fundamental understanding of why those interactions
create turbulence. But that situation may change in the future, so it is
not clear that turbulence is emergent in the sense of being
unpredictable. And even if it continues to be predictable only by
simulation, does that really make it "something unexpected that the
chemicals themselves can't do"?
> The objects inside a cell all interacting, including the DNA as a
> major player (but one out of many) produces the emergent property of
> "being alive". Still it is not a computer. Information is involved
> certainly but there is nothing in the emergence that upsets the
> mechanistic and materialistic operation of how it all works.
>
Life is a considerably more complicated subject than turbulence, and
may be a much better example of emergence. Again this doesn't mean it is
not mechanistic or materialistic. However I disagree that all
unpredicted behavior is "_merely_ our failure to imagine ...
consequences" as you state below. We know that we cannot make accurate
long range predictions about the weather, even though it is mechanistic.
We know that we cannot predict whether some algorithms will stop, even
though they are mechanistic. I don't think we know at present whether
life or consciousness are analogous to either of the above.
> The world works by objects obeying the laws of physics. The boundary
> conditions (in space and in time -- the initial conditions) are
> separate from the laws, themselves, and some people say this is a kind
> of duality: matter and information. However science takes that whole
> set: laws working in conformity with boundary conditions. And nothing
> in life, the reality inside cells or the playing out of Conway's game,
> deviates from that package: laws plus boundary conditions.
>
> Our "surprise" at finding "unexpected" and "unpredicted" behavior is
> merely our failure to imagine the consequences of a particular set of
> boundary conditions.
I would modify this to say "often" instead of "merely"
>
>
>