Skip to main content

Entropy and Life

Hey Tim,
Remember that wiki article you linked me to?  Maybe we could discuss it in the comments of this link.  Sound good?
Labels:

Comments

Leo White said…
Lemmee kick off, with the hope you'll pick up.
For starters, the equation by McCulloch doesn't mean anything to me: what's dQ?
9:33 PM
Unknown said…
Hey Leo,

The equations aren't really important in that article. dX (where X in any variable) is essentially synonymous with delta_x, or change in X. dX means a small change in X. Technically, dX is an infinitesimally small change in X - this assumption is the basis of calculus. What that equation means in words is that if you add a small amount of heat energy to a closed system otherwise kept at constant temperature, you will likely contribute to it's disorder. This, if I hold an ice cube and put a lighter by it (adding the dQ), some of it will melt into water - thus ruining its order and increasing its entropy (corresponding to an increase in S on the other side of the equation).
2:56 PM
Leo White said…
Yeah, and if you hold the ice cube with your fingers you're gonna burn your bloomin' hand off...
7:58 PM
Leo White said…
Okay, I'll try to get back to the article...
10:18 PM
Post a Comment

Popular posts from this blog

P F Strawson's Freedom and Resentment: the argument laid out

Here is a summary and comments on the essay Freedom and Resentment by PF Strawson.  He makes some great points, and when he is wrong, it is in such a way as to clarify things a great deal.  My non-deterministic position is much better thanks to having read this.  I’ll summarize it in this post and respond in a later one. In a nutshell: PFS first argues that personal resentment that we may feel toward another for having failed to show goodwill toward us would have no problem coexisting with the conviction that determinism is true.  Moral disapprobation, as an analog to resentment, is likewise capable of coexisting with deterministic convictions. In fact, it would seem nearly impossible for a normally-constituted person (i.e., a non-sociopath) to leave behind the web of moral convictions, even if that person is a determinist.  In this way, by arguing that moral and determinist convictions can coexist in the same person, PFS undermines the libertarian argument ...
Post a Comment
Read more

Daniel Dennett, disqualifying qualia, softening up the hard problem, fullness of vacuity, dysfunctional functionalism

Around track 2 of disc 9 of Intuition Pumps , Dennett offers what I would call an argument from vacuity.  He argues that David Chalmers unwittingly plays a magic trick on himself and others by placing a set of issues under the one umbrella called the "hard problem of consciousness." None of these issues is really , in Dennett's opinion, a hard problem.  But in naming them thus, Chalmers (says Dennett) is like a magician who seems to be playing the same card trick over and over again, but is really playing several different ones.  In this analogy, expert magicians watch what they think is the same trick played over and over again.  They find it unusually difficult to determine which trick he is playing because they take these performances as iterations of the same trick when each is  in fact different from the one that came before.  Furthermore, each of the tricks that he plays is actually an easy one, so it is precisely because they are looki...
Post a Comment
Read more

entropy, teleology

Perhaps the best way to understand entropy is to look at it as the tendency of things to arrive at equilibrium.  Many non-living processes head in that direction, but not all.  For an example of an exception, consider the movement of electrons around the nucleus: that movement itself doesn't seem to be heading toward any equilibrium… unless one considers the tendency of atoms to combine into molecules so as to fill the electron shells.  If reductionism is false, then isn't the fact that organisms continually create disequilibrium at one level, while seeking another equilibrium (for example a full stomach) quite relevant?   Of course, entropy as a law is about systems, not individuals…. right?
2 comments
Read more