The Wilkins videos

John Wilkins has recently posted a short series of videos, where he talks on topics related to philosophy of science.  Here are links to the posts where he presented the videos:

• Wilkins on philosophy of science
• Wilkins on demarcation
• Some more videos

I found these worth watching.  I am tentatively planning a future post where I comment on some of the videos.

What I liked about these videos, is that they give a better picture of what John Wilkins thinks about the issues he mentions.  Take, for example, his video on “Frequentism vs. Bayesianism.”  I have seen John mention Bayesian methods in earlier blog posts, and they left me a bit puzzled as to John’s position.  In the video, he makes it clear that he is very uncertain about these views (which I see as a respectable position).  I found that clarifying.

Constrained invention

This will mostly be a copy of what I recently posted in a Yahoo groups discussion.  And, incidentally, Yahoo badly mangled that post (stripped out most of the formatting).

As background, I’ll note that in an earlier Yahoo groups post, I had indicated that I was opposed to the view that perception is passive.  This seemed to puzzle some participants in the discussion.  So my post — the one I am quoting — was intended to explain what I mean when I say that perception is active.

The quoted post

You guys need to get out more. You are trapped in a world of logic, and unable to think outside that box.

You both seem committed to God’s eye view thinking, though you may be in denial over that. So you see perception as a system to report to you what is seen by the hypothetical God. But how could that ever work?

A note on the science/philosophy wars

Further to my earlier post, there was a recent discussion of this topic at Blogging Heads TV, between Daniel Kaufman (Missouri State Univ.) and Massimo Pigluicci (CUNY) on this topic (h/t Brian Leiter at his blog).

It was a pretty good discussion, and worth the 57 minutes it took to watch and listen.  Or you could just listen, as the watching is of talking heads.

At around 4:40, Pigliucci says (as transcribed by me):

Philosophy of science, in particular, is a way to look at the doings
of science from the outside, specifically from the epistemic warrant
perspective. So we want to know, as philosophers, how science
works logically, what is it that scientists take to be sufficient
evidence for their theories, how they construct their theories.

My own criticism of philosophy of science, is that I see them as doing poorly what is mentioned in the second sentence of that quote.

Overall, I agree with these two philosophers on many of the points that they brought up.  I do recommend taking the time to listen.

The science – philosophy wars

From time to time, scientists criticize philosophy.  And philosophers react.  For an example of this, see the relatively recent post by John Wilkins:

• Why do physicists hate philosophy?

In that post, John quotes some physicists, and wonders why they criticize philosophy.  I am going to suggest that a lot of this is miscommunication.

Knowledge

To see the problem, let’s look at what John said in a comment to that post:

Philosophy, which is about the nature of knowledge at least in part, must attend to actual knowledge. Hence it cannot ignore science and just pull epistemic strictures out of its rear end. Hence, [good] philosophy must attend to science.

Macro level determinism is false

In a recent post at his site, Jerry Coyne writes:

But physics does not have to be complete for us to accept determinism on a macro level.

Clearly, Coyne believes that there is determinism at the macro-level, which I take to be the level of ordinary objects such as we use in our everyday lives.  He is not alone in that belief in determinism.  It is a view I often hear.

That view is false.

The evidence from physics is clear.

HSW – Kepler’s laws are false

While my title line might seem dramatic, I want to be clear that this post is not intended as a criticism of Kepler, or of Kepler’s laws.  Rather, it is critical of the view that scientific laws are true descriptions of the world.  This post is intended as part of my series on how science works.  My aim is to describe my own understanding of Kepler’s laws.

The basis of Kepler’s laws

In case some of my readers are not familiar with them, Kepler’s laws are an attempt to account for the motion of the planets in our solar system.  Kepler’s laws were preceded by the Ptolemaic idea that the planets moved in cycles and epicycles.  Galileo argued, instead for the idea of Copernicus, that the planets traveled in circular paths around the sun.  I presume that Kepler was looking for something a little more precise than the Copernican circles.

HSW – Against induction

In this post, I shall argue against induction.  Specifically, I shall argue against what I referred to as “philosophic induction” in a recent post.  My earlier post — “All emeralds are green” — was intended to illustrate the view that I shall be presenting here.  I suggest you read that now, if you have not already done so.  Throughout this post, I shall assume familiarity with that story.

That emeralds are green has sometimes been used to illustrate the idea of induction.  Presumably, the argument would be:

• All the many emeralds that I have seen were green;
• Therefore all emeralds are green.

Interestingly, emeralds were also used by Nelson Goodman in his skeptical “grue” argument.

HSW – about induction

I have long been a critic of induction.  The trouble with the word “induction” is that it is used in many different ways.  As part of my continuing series on how science works, I want to explain here what I am criticizing, and what I am not criticizing.

Baconian induction

Sir Francis Bacon suggested used the term “induction” in his recommendations on investigating the natural world.  As described by Wikipedia, his method called for:

procedures for isolating and further investigating the form nature, or cause, of a phenomenon, including the method of agreement, method of difference, and method of concomitant variation.

HSW2 – How I see Newton’s mechanics

This continues my discussion of how science works, a topic that I introduced in a recent post.  The “HSW” in the title of this post is intended to indicate that.  My plan, for this post, is to describe how I look at Newton’s laws.  I won’t be discussing his law of gravity here, mostly to keep this post reasonably short.  I might post on that at a future time.

A note on history

I am not an historian.  My primary concern is with how the science works, rather than with how it was discovered.  If you think that I have said something about history, then you have misunderstood.  Some of what I am discussing here might actually be due to Galileo or to other scientists.

Science and philosophy

In a blog post last month, John Wilkins expressed concern about what some scientists say about philosophy:

What gets my gander is that Perakh, or more recently Lawrence Krauss, Hawking and Molodinow, and a steady stream of physicists, seem to think that while their own discipline is noble, authoritative and has extensive conceptual ramifications (that we should really call philosophical), my discipline is just “entertainment value”. In a rejoinder to me and others just posted, Perakh tries hard to back down from this, but it’s pretty clear that he, and his entire field, has a set against philosophy. Why is this?