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fruit flies and free will

There’s an interesting news story from last year about fruit flies and free will that I found via The Pinocchio Theory blog in this post on theoretical biologist Stuart Kauffman.

This is something I’d like to explore in great detail, but for now I just want to throw a few ideas out there. Basically, the study on fruit flies involved placing them on hooks with wires tying them down in a white environment devoid of resources. It turns out that their behavior formed a pattern. specifically, a Lévy distribution. If anyone out there can explain the math on this, that would be great because I’m definitely lacking in that area.

What I don’t understand is that how that implies free will. The scientists quoted in the article seem to be saying that the flies exhibited spontaneous behavior, but how does that jive with being a Lévy distribution?

Specifically, their behavior seemed to match up with a mathematical algorithm called Levy’s distribution, commonly found in nature. Flies use this procedure to find meals, as do albatrosses, monkeys and deer. Scientists have found similar patterns in the flow of e-mails, letters and money, and in the paintings of Jackson Pollock, Brembs said.

I understand that this is a news article about a scientific study, so it’s going to be an imperfect representation of the study’s findings, but it seems as if these scientists would benefit from a dialog with philosophers, preferably philosophers that I personally find interesting.

I’ll return to this idea later, most likely. I’d like if I could get some dialog going on this before I come back to it though, so… what was I saying? I was distracted while trying to kill a fruit fly. Those little bastards are fast.

Discussion

2 comments for “fruit flies and free will”

  1. Yes, flies are fast - which is why we tether them to fly stationarily. You can check out the page where I’ve elaborated on our press release and explained the study in more lay terms (with videos and figures):
    http://brembs.net/spontaneous
    Unfortunately, the math is pretty critical for our argument. However, Lévy flights are really just a side result as a multitude of processes are known to produce such distributions. The most important result is that we found a mathematical signature in the behavior of the flies which suggests that there is a non-linear (one could say chaotic, but that’s not 100% accurate) mechanism in the fly brain which constantly slightly changes the fly’s behavior, no matter what it does. This means that even flies hardly do exactly the same thing twice, not even in exactly the same situation.
    We interpret this as a brain-mechanism allowing the flies to be partially free from environmental stimuli - and then the argument goes on from there.

    Posted by Bjoern Brembs | July 30, 2008, 11:48 pm
  2. I feel bad for never following up on this since Bjoern Brembs was kind enough to comment on my post.

    I still find it extremely interesting, but other things came up and I never returned to this line of thought.

    What I will say is, please keep up this important work, even if Sarah Palin thinks it’s useless.

    Posted by von satyr-masoch | October 25, 2008, 3:28 pm

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