I have downloaded some lectures about computer science to watch. Some are from University, and some aren't.

I noticed the following:

I pause fairly often, and sometimes watch other videos instead then go back, or if I want to have some other sound (music, person talking).

I also pause sometimes to read the blackboard or slide, or consider something the lecturer said. Also if I don't understand part, or have a question, I might go find out the answer before continuing. Also I might try doing one of his examples.

I also need to have the option to pause if I think of something cool or important that I want to write about before I forget.

I skip forward or back in the lectures sometimes.

So so far: parts of the lecture are too fast, parts are too slow, parts are boring, and I rarely want to hear it all in one sitting.

I multi-task a lot. I am writing this with a lecture on. I also burned DVDs, chatted with people on AIM, organised files better, and read news articles.

For especially interesting parts, I watch with my full attention, but for most parts I only pay half attention. Sometimes I stop listening and miss parts. Later, I might or might not go back to hear it.

Missing stuff is OK. It's not important to understand everything the lecturer says. Not all parts of a subject are best learned through a lecture. Some gaps in my knowledge will be much easier to fill in when writing code, or watching a different lecture, or reading a book, or talking to someone.

Missing stuff does not make it impossible to learn about the later things. There are a lot of ways to understand later concepts without the previous concepts. Often I can just assume some feature works the way he says it does, and then the later features make perfect sense. Often later concepts are separate from earlier ones (perhaps they are both building blocks relevant to the conclusion).

So overall: I like to have, and extensively use, control over when I hear what parts of the lecture. Sitting through an entire lecture at once, not doing other things, is never ideal. It's not important whether I get the main point of the lecture or not.

In conclusion: the format of school lectures may be hard to change due to the practical problems presented by having in-person lectures with many students at once. But they are far from ideal for learning.

Lecture Links (Lisp stuff):

Univ: http://swiss.csail.mit.edu/classes/6.001/abelson-sussman-lectures/

Not-Univ: http://www.iro.umontreal.ca/%7Eboucherd/mslug/meetings/20041020/minutes-en.html

Paul Graham wrote:

Imagine if people in 1700 saw their lives the way we'd see them. It would have been unbearable. This denial is such a powerful force that, even when presented with possible solutions, people often prefer to believe they wouldn't work.

This is a very nice way to explain the issue, so I shall elaborate. People have, since the dawn of humanity, opposed new ideas that would reveal their lives as flawed and lacking and even miserable. This leaves two viewpoints we can take about the present: we are at the end of human progress and our lives have no serious flaws, or it is like 1700 and we are in denial about many problems.

Believing we are the best the Earth will ever offer goes against the facts. Everyone has problems. That's why it's possible to get a job as a psychotherapist or councilor. Saying there will be no more progress is really saying whatever problems we have now cannot be solved. Why say that? Because then our suffering isn't our fault. It might be possible to argue that some of our problems are insoluble, but certainly not all or most of them.

That leaves the other option: just like in 1700, we are in denial. I think this is broadly the case. When we say that temper tantrums are an inevitable part of parenting, that is not because there is no possible way to avoid fighting with our children, its because we don't want to see ourselves as failures. When we say children do bad things because they are children, that is avoiding facing the fact that we could have given better advice. (Some problems like that aren't foreseeable, but certainly some are.) When we say that "love hurts", we are denying that our own approach to relationships hurts us. When we divorce and insist vehemently that our partner is an evil bastard, we have to: if he wasn't a lying manipulator then it would have been possible to see the flaws in the relationship in advance. We didn't choose the wrong person, he tricked us! In all these examples we might be blameless, but sometimes there is something we could have done better, and assuming it might be partially our fault will help us find that out.

I want to move past this to a kinder view that expects mistakes and problems, and sees finding them as a positive step. We should feel good about discovering we were wrong: now we have a better shot at being right next time. Or if there won't be a next time for us, at least we could tell our children. And if it's important enough, we could write a book and tell the world.

We all have a lot of bad ideas. That's understandable. And it's excusable -- no, better than that: we don't need any excuse at all. But let's at least get one thing right: we aren't perfect. Most of the problems we face are caused by human mistakes. That's the most optimistic belief we can have because humans are capable of correcting their own mistakes.

This is an interesting example of a site that is against people having power and control over what they do.

Mixed into a couple reasonable arguments, it mostly opposes the "nofollow" feature on links (which makes search engines not count them) because it lets people control who they give link credit to, so now they can sell it, or not give credit to sites they don't like.

The anti-nofollow people act like nofollow is dangerous. But no one has to use it. They are really against anyone who wants to use nofollow having the option to. In other words, they want to control people they disagree with. They advocate the world being such a way no one can do anything but enact their theory of how to live.

Usually anti-human-power views are associated with, say, gun control advocates or people who hate technology. But I think it's very widespread. Any sort of authoritarian view that does not want to allow people to make their own choices is anti-human.

Blogs are slamming Google for cooperating with China.

I am saddened and dismayed to see anti-capitalist and anti-corporate rhetoric, especially from right-of-center blogs. Making a mistake is one thing; maybe Google did. But assuming the cause must be the profit motive is anti-capitalist. There are many ways to make a mistake that are not about greed.

I have not seen, in a single post, any actual evidence that Google is doing this out of greed. No arguments explaining why the profit motive causes mistakes. No quotes from Google executives advocating greed. No calculations about how much money Google will make by this decision, and whether that is enough to cause corruption. No discussion of whether this is profitable at all (generating negative publicity is bad for business). No explanations of why people with good ideals would turn to evil beyond assertions that money is a force for evil. The big fuss is, I have to say, nothing but unreflective calumny that one would normally expect only from very silly lefties.

I don't know if Google's cooperation is a mistake or not. I (and other bloggers) do not have the necessary inside information to accurately judge just what options Google had and exactly why it chose this. Guessing that Google is a sinful capitalist company may be fun, but it doesn't tell us why this happened or whether it was the right decision.

There are dual sins at work here. First we have the debate tactic of saying the people we disagree with have immoral motives (while failing to acknowledge their actual position). Second, we have the profit motive as the evil motive of choice.

Here is an example of an unfair headline:

Don't Be Evil - Unless It's Profitable
The Conservative Voice

The right wing anti-capitalist pieces don't seriously argue their position. What could they say? That US corporations are greedy and corrupt and if only we weren't capitalist we could live in freedom, with no censorship?

This piece calls Google evil, and suggests that caring about business may entice Google more deeply into evil. It suggests Google plans to notify users when search results are blocked, but it asserts that is only worth brownie points and makes Google a little less evil. It goes on to say:

They say that they will have a link somewhere on the Google.cn page enabling users to access the U.S.-hosted version at: http://www.google.com/ig?hl=zh-CN. So that Chinese users who prefer can opt for the pre-Google.cn experience.

but doesn't believe this to absolve Google of evil because it might not be displayed prominently enough. Evil is the premise, not the conclusion.

Here is Google's explanation of its decision.

Edit: "Very silly lefties" links to the Democratic Underground. If you don't believe in conspiracy theories, that doesn't apply to you.

At breakup, people realise, "he never knew me at all". Why were they fooled before? It's because he was running functions like this:

define-action "care": (lookup-and-say: "conventional-way-to-care")

instead of like this:

define-action "care": (lookup-and-say: "what-partner-cares-about")

So as long as the couple is roughly conventional, things seem to work. They seem to have instant knowledge of each other. But they don't actually have knowledge of each other, and that is revealed when they get into more subtle parts of their personalities and find differences from both convention and each other.

The second function will respond to the partner changing. The first will not and is thus deeply impersonal.

evilhasmanyguises

A binary choice is a choice with two options. Most binary choices aren't. For example "boxers or briefs?" is presented as having two options, but in fact there are others, such as going commando or wearing long underwear.

There are a lot of binary choices out there, like disciplining your children or spoiling them. Being permissive or harsh. Being left or right wing. Believing certainty, or that we don't know anything. Believing in God, or not. A child sharing his toy, or being selfish. A mother making her child share, or permitting him to act badly.

Each of the above examples isn't really a binary choice. There are all sorts of alternative options. For example one can be neither permissive and negligent, nor harsh in a variety of ways. One way would be to be helpful. This avoids "letting" kids do whatever bad things they want by helping them find out what is good to do. It also avoids being harsh by helping the child to get things he wants instead of thwarting him.

Common preference finding and non-coercion don't function in a world of binary choices. They involve creating new choices just as much as finding ways to like things other than our initial preference. Frequently, none of our initial solutions are good enough, and we need to think of new options.

If your child doesn't like something, do not tell him these are the possibilities, and that's the way it is, and he can have whichever color toy he wants as long as it's red or black. Buy some pink paint. If he doesn't like the options that seem to be available, it's time to brainstorm. Be optimistic.

Finding positive interpretations is a critical part of being optimistic. In our relationships with friends and family, positive interpretations are nearly always true because the people close to us don't want to do bad things to us, or at all. Misunderstandings and miscommunication are common occurrences, so it's wise not to jump to negative conclusions just because something seems bad.

Positive interpretations can be self-fulfilling prophecies, just as negative interpretations can be. Suppose someone asks a question, and he could mean a stupid question, or an interesting one. If we answer the interesting one, it may lead him to be interested in that and see the issue in the proper way, even if he didn't already. And we will be saying something more interesting and therefore better. Assuming the person means the stupid question, or even asking if he does, shows we think he is or may be stupid, and encourages him to see himself that way.

Positive interpretations help make life safer. For example, a child in need of advice, and partially confused about a moral issue, will want to be able to ask his parent questions and make mistakes about that issue without his parent deciding he is wicked. Rather, the parent should stick to the positive interpretation that the child is learning, and is not bad, and will be fine, and wants to be good. And most of the things the child says that seem bad won't be. Some will be glossing over an issue while focussing on a different one. Some will be harmless confusion about an unrelated topic. Some the child will be right about. Some, while the content is bad, won't indicate any defect in the child himself who's just curious about a bad thing.

Another issue is that being wrong about positive interpretations is less costly than being wrong about negative interpretations. That is why criminals only go to jail if there is no reasonable doubt: if there is any reasonable positive interpretation of events in which the man is not guilty, the risk of making a tragic mistake is too high. Similarly, to treat someone too well is nothing to be ashamed of, and no great harm will come of it. But to treat someone, especially your friend or child, too badly is a mistake you will regret.