Kaj_Sotala comments on You don't need Kant - Less Wrong

21 Post author: Andrew 01 April 2009 06:09PM

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Comment author: Kaj_Sotala 01 April 2009 09:02:21PM 23 points [-]

This is what annoys me about most philosophy teaching. They don't actually teach philosophy: they teach the history of philosophy, with a person-centric focus.

Imagine if math teaching, say, was the same, with as much time spent memorizing who came up with each theorem as the theorems and their application themselves.

Comment author: Jayson_Virissimo 02 April 2009 08:09:11AM 5 points [-]

Actually, the part about math class I disliked the most was how devoid of history and theory it was. Most of my math classes in college covered only techniques for solving certain kind of problems. Nowhere did they explain why something is done a certain way or how someone discovered it could be done that way. Instead, it was definition, application, proof, etc...

Comment author: MichaelVassar 02 April 2009 12:05:49AM 9 points [-]

I actually think that math teaching might work better if people spent time learning who though what as a result of asking what questions and how they first conceptualized their insights by building on what else.

Memorizing anything anywhere ever except as practice for understanding how memory works is always an indication that something has gone wrong however.

Comment author: Nick_Tarleton 02 April 2009 04:05:56AM 9 points [-]

Do you mean "being made to explicitly work at memorizing is always bad, because you should pick up the important parts in the course of doing natural work"?

Comment author: Vladimir_Nesov 02 April 2009 03:33:52PM 6 points [-]

Memorizing anything anywhere ever except as practice for understanding how memory works is always an indication that something has gone wrong however.

I agree. I can't recall the last time I had to work on directly memorizing something, after the poetry assignments in high school. In all the other instances, the memorization occurs in the course of understanding the material, thinking or reading in terms of new concepts. This applies even to language learning, where the new words are learned in course of reading with a dictionary (if you are not in a hurry). The concepts learned this way can always be tabooed without hurting the knowledge.

Comment author: Cyan 02 April 2009 03:00:13AM *  5 points [-]

I take it you've never studied biochemistry at the senior undergrad level. Evolution doesn't produce easily systematizable components down at the level of proteins and other macromolecules of like size. I can't think of a workable alternative to giving things more-or-less arbitrary names and requiring people to memorize them so as to have a common language.

Comment author: John_Maxwell_IV 02 April 2009 03:44:37AM 4 points [-]

Can you imagine a successful computer programmer who was constantly looking up the syntax of the language they were programming in? Memorization is damn near essential.

Comment author: JGWeissman 02 April 2009 06:46:49PM 7 points [-]

I expect a good computer programmer to be effective in a language he has not seen before by looking up the syntax as he needs it, and to increase his effectiveness over time by learning the syntax through use, without any specific effort of memorization. At least, provided the novel language is good.

Comment author: John_Maxwell_IV 02 April 2009 09:21:03PM 2 points [-]

Good point. Now that you frame things in terms of how knowledge is acquired, the only thing I'm glad to have memorized is math facts in elementary school. But they have been pretty helpful!

Comment author: pjeby 02 April 2009 03:30:59AM 4 points [-]

Memorizing anything anywhere ever except as practice for understanding how memory works is always an indication that something has gone wrong however.

So, how else do you suggest people learn to speak, read and write?

Comment author: Cyan 02 April 2009 03:47:47AM 4 points [-]

I'll give you reading and writing, but learning to speak isn't memorizing any more than subitizing is counting.

Comment author: PhilGoetz 02 April 2009 02:43:39AM 4 points [-]

Memorizing is always bad? That seems obviously wrong to me.

Comment author: Annoyance 02 April 2009 05:49:11PM 1 point [-]

Most science classes aren't about practicing science, but memorizing science that's already done. Most math classes are the same way.

If you're not going to be extending math theory, is remaining ignorant of the process really a detriment?

Comment author: JGWeissman 02 April 2009 07:14:16PM 2 points [-]

Understanding the process of extending math theory is essential if you want to be able to tell the difference between being led down a good path and being led down a bad path.

If all you do is memorize theorems without understanding their proofs, you can memorize false theorems and not know the difference until, maybe, a contradiction hits you over the head and demands attention.

Comment author: AspiringRationalist 24 March 2012 07:55:13AM 0 points [-]

Checking a solution is often a lot easier than generating an original solution. If you are not going to be generating original solutions, I would guess that there are better uses of your time than learning how to. In my schooling in general (at middle school and higher level), I was generally annoyed that most subjects were taught with the assumption that you were going to become a practitioner of that subject, rather than simply a user. Naturally, every teacher thinks their subject is the most important in the world (why else would they have chosen it?), but most of their students do not see it that way. I would have been far better off learning how to communicate effectively rather than psychoanalyzing literature, just as those bound for non-quantitative careers would have been better off learning the math they need to keep their finances in order than constructing geometric proofs.

Comment author: Eliezer_Yudkowsky 02 April 2009 06:14:35PM 1 point [-]

Even high school geometry requires you to construct your own proofs.

Comment author: Larks 16 August 2009 02:35:40PM 2 points [-]

It may be different abroad, but in the UK state system, we were never taught the idea of a proof untill sixth form (age 16-18).

Comment author: Annoyance 02 April 2009 06:25:41PM -1 points [-]

Most people hate geometry and not only promptly forget it once they're out of the class but develop an aversion to it.

Also, there's barely any historical discussion of how the geometrical results were first found, with a few colorful anecdotes as exceptions.

Knowing how to construct a proof has nothing to do with knowing how the ancient Greeks viewed geometry. Knowing how to solve a math problem has nothing to do with knowing how the method was originally worked out.

Comment author: CCC 23 October 2012 05:58:06PM 1 point [-]

When I was in school, we were given proofs of certain geometry theorems, and we were told that we might have to prove the same theorems in the exam. Most of my classmates simply memorised the proof as given; since I'm better at on-the-spot analysis than at memorisation, I used to re-prove the theorems from basic principles instead. The result of this was that my proof, while (usually) correct, would look nothing like everyone else's proofs. Because of this, the maths teachers would have to actually evaluate my proofs step by step, instead of simply ticking off the well-recognised general proof. Apparently this makes marking slower.

This implies that there may be some pressure from the teachers for memory-learning, as it leads to easier marking.

Comment author: MichaelBishop 02 April 2009 10:00:04PM 0 points [-]

Memorization is necessary, though it is certainly overemphasized in certain academic contexts. For example, good math teachers know that memorizing multiplication tables and working to improve the speed of recall frees working memory to deal with higher level concepts. Of course it is also important that kids are simultaneously being taught what multiplication represents. I've seen teachers err on both sides of the memorization vs. exploration/conceptual development fence. - Wow, its rare to catch Vassar in an over-generalization!

Comment author: PhilGoetz 01 April 2009 10:34:23PM *  7 points [-]

What bugs me about philosophy teaching is that it teaches that philosophy is useless. Every philosophy curriculum starts with a lecture on "Why study philosophy?" No one suggests in these lectures that the answers found in philosophy should affect the way you act (or the way you vote). No; they are to be fun, or satisfy your curiousity about "the big questions", or teach you how to think and critically analyze claims (even though they often involve no critical analysis!)

Comment author: Jack 01 April 2009 10:26:15PM 3 points [-]

I must have had some of the better philosophy teachers then.

Comment author: Matt_Simpson 02 April 2009 03:47:48AM 2 points [-]

I think part of the reason philosophy is taught this way is that very little is settled in the field. So in order to teach philosophy at all you have to go back to someone's views. Makes for a great field for status mongers, all else equal (is philosophy actually worse than the rest of academia in this regard? How about just in comparison to, say, physics or economics?) .

Comment author: JulianMorrison 01 April 2009 09:31:24PM 2 points [-]

Crazily enough, physics teaching does seem to be a bit like this.

Comment author: PhilGoetz 01 April 2009 10:20:01PM 14 points [-]

We like our physicists to be heroic figures, and our mathematicians to shut up and multiply.

20th-century physics is taught as a series of historical events, taking you through intermediate steps; because if you taught someone relativity and quantum mechanics without explaining the experimental data and the different ways that were tried of reconciling them that failed, they wouldn't believe you.

Comment author: MBlume 01 April 2009 10:57:20PM 8 points [-]

because if you taught someone relativity and quantum mechanics without explaining the experimental data and the different ways that were tried of reconciling them that failed, they wouldn't believe you.

I like this, I'd never thought of it that way. Griffiths also justifies taking a somewhat historical approach by claiming it as a hack for the student's brain -- that our minds are built to process stories, to process narratives, and so by introducing each particle one at a time, through the events that led to its discovery, he can better fix the identity of that particle in the student's mind.

Comment author: John_Maxwell_IV 02 April 2009 03:46:57AM 3 points [-]

Yep. If you can make learning into a story, question, or game, it becomes easier and more fun.

Comment author: AspiringRationalist 24 March 2012 07:43:18AM 0 points [-]

The story hack seems very hit-or-miss. For some students, the progression from the plum pudding model to the Bohr model to quantum mechanics is an engaging story that helps them understand the fundamentals of chemistry. Personally, these stories just made me tune out and wonder when they would get around to teaching me something useful.

That said, in scientific fields that are less well-developed, I think the historical experiments approach really adds to learning. It would be a lot harder to grok the psychology of authority without learning about the Milgram obedience study.

Comment author: MichaelVassar 02 April 2009 12:07:21AM 6 points [-]

At Drexler my wife had the misfortune to get a physics teacher who just taught physics results, no experiments, narrative, history etc. Useless and worse than useless. He did real damage.

Comment author: komponisto 02 April 2009 12:38:27AM 9 points [-]

On the other hand, the usual, historical approach to teaching quantum mechanics is far from optimal.

Comment author: Andrew 02 April 2009 01:20:20AM -1 points [-]

"We like our physicists to be heroic figures, and our mathematicians to shut up and multiply."

Ahahahaha! I'll have to remember that one.

Comment author: MBlume 01 April 2009 09:50:15PM 1 point [-]

I must've had some of the better physics teachers then.

Comment author: FiftyTwo 23 October 2012 05:46:00PM 0 points [-]

This may vary with country. I know philosophy teaching in the UK isn't like this, but have heard it as a criticism of the way it is taught in America (A friend doing a semester abroad at a US institution once despaired that the final exam included the question "when was Descartes meditations published").