DavidSJ

73 ms·

721.
by DavidSJ 12y ago
I only went at the age of 15, after dropping out of high school as a birthday present to myself and discovering the book Summerhill (about a similar school in England). It was probably the happiest time of my life, because it was the first
722.
by DavidSJ 12y ago
Didn't Red Cedar eventually decide to become a Montessori school? What happened with that?
723.
by DavidSJ 12y ago
Sudbury Valley has rules, as the article text even acknowledges. The difference is that the rules are designed to protect the rights of members of the community, not to tell students how to spend their day. Source: I went there.
724.
by DavidSJ 12y ago
You're right that it's an arbitrary interval, but the math is still valid if you assume (as I cautioned against) that each investment is a coin flip relative to the market. In that case, over any time period your relative performa
725.
by DavidSJ 12y ago
If the title of the article were accurate (which it's not, since the text of the article confirms the fund did not outperform in each of those 40 years), then that performance would be hard to explain by random chance. Assuming naively
726.
by DavidSJ 12y ago
The title appears to be inaccurate. The fund has, on average, outperformed the market by 2%/year over 40 years, which works out to 120% outperformance with compounding. That is far less impressive than beating the market consistentl
727.
by DavidSJ 12y ago
Given diminishing marginal utility of wealth, diversification increases expected utility, even if not expected wealth.
728.
by DavidSJ 12y ago
I omitted the last few lines while including an ellipsis to indicate I had done so, and including a link to the original so people could see the full poem (as well as authorship) for themselves. I don't think I changed the meaning of t
729.
by DavidSJ 12y ago
I included the link in your zeroeth reference in my original post, well before anyone had replied. I had no intention to take credit for the poem, and assumed most readers here were smart enough to infer authorship from the link I included.
730.
by DavidSJ 12y ago
It's not because I thought the audience would be hostile, but I don't like those last few lines (mainly because of that turn), and think it's a better poem without them. Do you think it's better to leave it intact?
731.
by DavidSJ 12y ago
Your children are not your children. They are the sons and daughters of Life's longing for itself. They come through you but not from you, And though they are with you yet they belong not to you. You may give them your lo
732.
by DavidSJ 12y ago
Rotation and mirroring only buy you a factor of 8, and that's for positions that aren't already symmetric.
733.
by DavidSJ 12y ago
I too went to a Montessori school, and later a Sudbury school (the original in fact), and even later staffed at a Sudbury school (they don't have teachers per se, another way they differ from Montessori). As you describe, you had to ch
734.
by DavidSJ 12y ago
Q-learning is not a lookup table from states to actions. It's a learned mapping (using any method you want, such as neural networks) from agent history (i.e. the agent is allowed to consider the past) & action pairs, to estimates o
735.
by DavidSJ 12y ago
Summerhill and Montessori are worlds apart. At Montessori, you're supposed to like what you do. At Summerhill (and Sudbury schools), you do what you like.
736.
by DavidSJ 12y ago
Machine learning researchers aren't going to stop looking for ways to develop better translation algorithms, learned more effectively from the vast volume of data that already exists.
737.
by DavidSJ 12y ago
What they mean by "the algorithm" is the learning algorithm, not the actual learned behavior. Historically in machine learning a great deal of hand tuning of learning algorithms is required for them to even be effective on a singl
738.
by DavidSJ 12y ago
This model is fundamentally flawed. It assumes (highly) exponential increases in hash rate with time but constant energy efficiency. However it is nearly entirely increases in efficiency that have driven the higher hash rates. If those effi
739.
by DavidSJ 12y ago
From such heights has Scientific American fallen: http://www.federaljack.com/ebooks/Consciousness%20Books%20Co... (large PDF download ahead)
740.
by DavidSJ 12y ago
As I understand it, it's not a fee that the maker receives, it's a fee CoinBase receives, i.e. it's their way of making profit off of this exchange. The mechanism which could drive it to zero is competition from other exchang
741.
by DavidSJ 12y ago
Sounds like you're agreeing with me? By "lineage" I'm talking primarily about the lineage of a gene, or in many cases the so-called inclusive fitness of an individual.
742.
by DavidSJ 12y ago
See also Relativistic Statistical Arbitrage: http://www.alexwg.org/publications/PhysRevE_82-056104.pdf
743.
by DavidSJ 12y ago
Keep in mind that evolution works primarily at a subspecies level, so any mutations which benefited that lineage at the expense of the species as a whole would tend to be favored.
744.
by DavidSJ 12y ago
In summary: if you're a (compulsory) student, a new law says that all your private conversations can be read by a government worker if he or she suspects you of having evidence that someone else is being mean. I'm pretty sure this
745.
New Illinois Law Forces Students to Give Up Social Media Passwords Or Be Charged(thefreethoughtproject.com)
6 points by DavidSJ 12y ago|2 comments
746.
by DavidSJ 12y ago
Slight correction: SpaceX is leaving Earth orbit in three weeks: http://en.m.wikipedia.org/wiki/Deep_Space_Climate_Observator...
747.
by DavidSJ 12y ago
Presumably inspired by http://www.terminally-incoherent.com/blog/2006/08/01/text-ed...
748.
by DavidSJ 12y ago
That seems different to me. There's lots of scifi and speculation about contact between civilizations of vastly different technological development. But the idea here is that the expansion of a civilization happens so quickly that it c
749.
by DavidSJ 12y ago
There is actually a pretty good explanation for it in my opinion, that it takes about this long since the big bang for life forms of our complexity to exist. (meaning our planet was seeded at some point with some primitive life forms that
750.
by DavidSJ 12y ago
I had this idea recently myself and to the best of my knowledge you're the only other person who's mentioned it. The closest I've found is the "galactic preemption" hypothesis published in the 80's, but that&#x

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