All of MTGandP's Comments + Replies

This basically means they are perfectly achieving their goal, right? Wirecutter's goal isn't to find the best product, it's to find the best product at a reasonable price. If you're a power user, you'll be willing to buy better and more expensive stuff.

4romeostevensit
No, I mean 80:20 of optimization overall. There are often better price:performance options if you hunt for it. e.g. with laptops a budget thinkpad (e series) is much better than their budget choice for most users.

Feature request: Q&A posts show a sidebar with all top-level answers and the associated usernames (example). Would be nice if the Anti-Kibitzer could hide these usernames.

The script works well on individual posts, but I find that on the lesswrong.com homepage, it displays names and vote counts for about 3 seconds before it finishes executing. Perhaps there's some way to make it run faster, or failing that, to block the page from rendering until the script finishes running?

Somewhat debatable whether this is a desirable feature, but right now the ordering of comments leaks information about their vote counts. Perhaps it would be good to randomize comment order.

2Raemon
Note that you can set the comment ordering (I’m not sure offhand whether it’s persistent but I think it is)
7gilch
I upvoted for relevance (although it's not quite what I asked for). Interesting read. The efficient-market hypothesis is coherent, falsifiable and wrong, even in its weakest form: The paper describes a way to introduce an inefficiency, that were it arbitraged optimally, would solve an (NP-complete) satisfiability problem. Even if P = NP (which seems unlikely), it remains unproven, so nobody yet knows how to solve NP-complete problems in PTIME, which would be required for markets to be truly efficient. The eldritch abomination may grow stronger with every attack, but it is decaying even faster than we can fight it. The number of possibilities to search for anomalies grows faster than our ability to compute them when you account for the possibility of anomalies in the pricing of sets of securities, like for pairs trading. There might be something like 100,000 publicly-traded stocks in the world, but that would mean (1000002) combinations or nearly five billion pairs. And that's not even considering larger subsets, like triples, which would be on the order of hundreds of trillions. So the EMH can't be literally true. but can it be approximately true? It must be to some degree for the question to be this contentious. The real question I'm interested in, is "Are the markets exploitable?" Is there such a thing as alpha, or its it just luck? If finding exploits is as expensive as exploiting them is profitable, then the EMH might as well be true for that purpose. But if there are plenty of anomalies to go around, then I could have a realistic chance of finding and profiting from one nobody has noticed before.

Now that April 17 has passed, how much did you end up making on this bet?

Wei Dai370

I rolled a lot of the puts into later expirations, which have become almost worthless. I did cash out or convert into long positions some of them, and made about 10x my initial bet as a result. (In other words I lost about 80% of my paper profits.) It seems like I have a tendency to get out of my bets too late (same thing happened with Bitcoin), which I'll have to keep in mind in the future. BTW I wrote about some of my other investments/bets recently at https://ea.greaterwrong.com/posts/g4oGNGwAoDwyMAJSB/how-much-leverage-should-altruists-use/comment/RBXq

... (read more)
MTGandP170

I know more about StarCraft than I do about AI, so I could be off base, but here's my best attempt at an explanation:

As a human, you can understand that a factory gets in the way of a unit, and if you lift it, it will no longer be in the way. The AI doesn't understand this. The AI learns by playing through scenarios millions of times and learning that on average, in scenarios like this one, it gets an advantage when it performs this action. The AI has a much easier time learning something like "I should make a marine" (which it perceive... (read more)

2orthonormal
Exactly. It seems like you need something beyond present imitation learning and deep reinforcement learning to efficiently learn strategies whose individual components don't benefit you, but which have a major effect if assembled perfectly together. (I mean, don't underestimate gradient descent with huge numbers of trials - the genetic version did evolve a complicated eye in such a way that every step was a fitness improvement; but the final model has a literal blind spot that could have been avoided if it were engineered in another way.)

At some point, all traders with this belief will have already bought the stock and the price will stop going up at that point, thus making the price movement anti-inductive.

I'm tempted to correct my past self's grammar by pointing out that "e.g." should be followed by a comma.

Is it possible to self-consistently believe you're poorly calibrated? If you believe you're overconfident then you would start making less confident predictions right?

5scarcegreengrass
You can be imperfectly synchronised across contexts & instances.

Being poorly calibrated can also mean you're inconsistent between being overconfident and underconfident.

MTGandP530

The survey has been taken by me.

MTGandP180

The question "How Long Since You Last Posted On LessWrong?" is ambiguous--I don't know if posting includes comments or just top-level posts.

3DanArmak
I assumed it was about posts, because of the wording - it said "posted" not "commented"!
Vaniver110

I assumed it was about comments, because only a handful of people would have posted a top-level post to LW 'today.'

4gjm
I think the ambiguity is kinda resolved by the fact that the previous question was about comments and this one would be largely redundant if interprete as also about comments. Also, the timescales in the question make better sense in reference to actual posts. I agree it would be better if a bit more explicit, though.

And here we are one year later!

1Sunny from QAD
Yes, do it for posterity!
MTGandP10

Can you imagine a Hollywood movie in which the hero did that, instead of coming up with some amazing clever way to save the civilians on the ship?

Jack Bauer might do it.

MTGandP60

This is really remarkable to read six years later, since, although I don't know you personally, I know your reputation as That Guy Who Has Really Awesome Idyllic Relationships.

MTGandP40

It may be theoretically possible to increase my mental capacity in some way such that I can distinguish mental capacity from hallucination. I cannot conceive of how that would be done, but it may be possible.

P.S. I love when people reply to comments that are two and a half years old. It feels like we're talking to the past.

MTGandP00

It probably just computes it as a float and then prints the whole float.

(I do recognize the silliness of replying to a three-year old comment that itself is replying to a six-year old comment.)

0Soothsilver
It's not silly. I still find these newer comments useful.
MTGandP00

Sort-of related question: How do you compute calibration scores?

0Vaniver
I was using a logarithmic scoring rule, with a base of 10. (What base you use doesn't really matter.) The Excel formula for the first question (I'm pretty sure I didn't delete any columns, so it should line up) was: =IF(EJ2,LOG(EU2/100),LOG(1-EU2/100))
MTGandP30

And then check if the "rationality improvement" people do better on calibration. (I'm guessing they don't.)

MTGandP40

We send out a feedback survey a few days after the workshop which includes the question "0 to 10, are you glad you came?" The average response to that question is 9.3.

I've seen CFAR talk about this before, and I don't view it as strong evidence that CFAR is valuable.

  • If people pay a lot of money for something that's not worth it, we'd expect them to rate it as valuable by the principle of cognitive dissonance.
  • If people rate something as valuable, is it because it improved their lives, or because it made them feel good?

For these ratings to ... (read more)

MTGandP120

I answered that I'm cis by default, but I would freak out if I woke up in a woman's body.

I think it's totally reasonable to consider that freaky for reasons other than that you now have to live as a woman. I think the spirit of the question was more, "If you were a woman but had the same personality, would you be okay with that?"

-227chaos
This seems like a contradiction to me.
MTGandP120

Most people do worse at calibration than they expect, but you can improve with practice. http://predictionbook.com/

MTGandP20

I'm not sure what you mean. I personally have a mental category of "mythical beings that don't exist but some people believe exist", which includes God, the tooth fairy, Santa, unicorns, etc. This girl appears to have the same mental category, even though she believes in God but doesn't believe in the tooth fairy.

MTGandP20

Interesting that she seems to mentally classify God and the tooth fairy in the same category.

0IlyaShpitser
Well, she's only 7.
MTGandP20

Are there volunteers to test this program for 4 months and report the results?

I've been doing Starting Strength for about 3 months. My legs are noticeably larger--jeans that used to fit loosely are now tight around my thighs, and I no longer need to wear a belt. My posture has improved as well. I haven't noticed a visible change in my arms, probably because (a) arms are smaller; (b) Starting Strength emphasizes legs and back more; (c) I haven't been as consistent about increasing the weight I'm lifting with the arms exercises.

MTGandP00

Where is a good place to buy weightlifting shoes? What stores carry them?

1RomeoStevens
It's rare in the US. Larger shoe speciality stores might have some. Everyone I know ordered theirs online. The major brand ones are true to size.
MTGandP30

As army1987 said, only a small percentage of experienced rationalists sign up for cryonics, so I wouldn't expect there to be social pressure. I think a more likely explanation is that experienced rationalists feel less social pressure against signing up for cryonics.

MTGandP10

This might just be a personal quirk, but I don't really get hungry—I have no instinct telling me "you need to eat right now." If I don't plan my meals, I end up way undereating.

MTGandP00

I currently eat about 2000-2500 calories a day. If I started lifting weights, wouldn't I need more like 4000 calories? That's a pretty big jump.

0Lumifer
Depending on your current body constitution you might prefer to shift some of your fat to muscle which would not necessarily involve upping your calories.
0RomeoStevens
every 500 calorie increment is 3500 calories a week, or about a pound of tissue a week. Studies and the experiences of coaches agree strongly here: You can't gain lean body mass much faster than this. Small and temporary exceptions occur for people who are very underweight or recovering previous strength levels.
MTGandP00

Questions about nutrition:

Question 1.

Don't try to implement a new diet and a new exercise plan at the same time.

If you are underweight or normal weight, you'll need to eat more when you start exercising.

Don't these two statements contradict each other? If I'm on the light side (which I am) and start exercising without changing my diet first, won't I have a calorie deficit?

Question 2.

I'm vegan and in college. These make it harder to get adequate nutrition because the dining halls don't usually have calorie-dense plant-based foods. It's my understanding ... (read more)

0Richard_Kennaway
Leaving aside the vegan issue, why is it necessary to plan to eat more if you exercise more? Won't the exercise make you hungrier and lead to eating whatever you need anyway?
1RomeoStevens
1. I wasn't counting eating 500 calories extra a day as a diet change. Most people can do that with an extra glass of milk and some cookies easily. 2. I don't know a lot about vegan nutrition. I would imagine getting caloric density basically means fatty plants. Avocados, coconut oil, peanuts (peanut butter and oats with some almond milk is probably a staple bulking food), tree nuts, etc.
MTGandP70
  • I have no idea where you got the idea that Less Wrongers tend to believe in natural rights. This seems to have come out of nowhere. I don't understand how you infer it from the evidence you presented.
  • Many LWers believe that FAI is important because an unfriendly AI would likely lead to negative consequences, not because it would violate any natural rights.
  • In general, your arguments seem completely disconnected from the beliefs conveyed in the sequences and other prominent writings on LW.
MTGandP00

When I read this story, I became emotionally invested in Nate (So8res). I empathized with him. He's the protagonist of the story. Therefore, I have to accept his ideas because otherwise I'd be rejecting his status as protagonist.

MTGandP00

According to 80000 Hours, law is still one of the highest-earning careers.

MTGandP00

For any given company, you'll be able to get them to up their offer at least once and potentially thrice.

How do you assess when a company isn't going to up their offer anymore? It seems hard to distinguish between "We're saying this is our highest offer but it's actually not" and "This is our highest offer."

1Alexei
Intuition. But I found that usually if you are trying to make them up the offer and they can in any way, they will. When they say they are done, they are basically done. The only way you would ever extract more value is if you said something like: "give me 10% more than what you are offering and I'll accept your offer right this instant."
MTGandP80

The links to the public data given at the end appear to be broken. They give internal links to Less Wrong instead of redirecting to Slate Star Codex. These links should work:

sav xls csv

3Vladimir_Nesov
Fixed.
MTGandP20

I don't deny that you feel freaked out by this experience, but it isn't all that surprising. When calculating the probability of an unlikely event, you must also consider all the other events that could have happened and that you would have found equally weird.

Of the trillions of other equally-unlikely coincidences that didn't occur, here are a few examples:

  • You take a round-trip flight and the two flight numbers concatenated make your social security number.
  • As a child, you had a pet cat and dog named Milly and Rex that seemed to behave like a married c
... (read more)
MTGandP30

I don't think this is so much "treating children as pets" as it is "treating children like not your peers". When your boss asks you to do something, does she say "Hey, would you mind helping me out with X? I'd really like to get it done this week."? More than likely, she says "I need you to finish X by Friday."

You only need to give justifications to peers. A person in a higher position of authority can make a request of a subordinate without justification. So it is with officers/privates in the military, managers/employees, and parents/children.

2DaFranker
To adress your second point: The point isn't in justification. The difference I'm pointing at is the attitude and mental model of the world of the Commander, i.e. the parent. And this causes some crucial differences in behavior that aren't accounted for by the lack of need to justify oneself or even the consideration of not being a peer. Sure, we could say some (or perhaps even most, YMMV) workplace managers behave a certain way that is similar to those parents and children. We could say the same for militaries. I care little for what one could say about the similarities or the words that can or "should" be used. Key point: Children are often treated by their parents in a manner completely dissimilar to every other case of family member or person with whom they live. Key point 2: This behavior of parents towards children has sufficient differences from typical cases of social-class or not-peer behaviors for me to not label it as a standard case of such. I believe it would be very misleading. Parents often carefully control the "private life" of their children; what they eat, what they do at any given time, who they interact with, what they say, and even what they think to some extent. Even in military settings, moreso in workplaces, these examples are not at all carefully monitored and controlled with punishments and threats of various kinds, and even those that are generally end the moment your shift ends and you walk out the door, with some exceptions regarding PR and such (e.g. politicians and people with similar occupations). Key Point 3: Behaviors, social norms and laws differ between all those cases, and I would argue that laws and social norms, at least, are more similar between pets and children than they are between children and employees/nonofficers. If an employee doesn't behave as a manager wishes, they are limited in their options, and the interactions and roles are socially clear. A manager cannot threaten to confiscate an employee's phone for not
MTGandP00

It also costs debt collectors some amount of money to collect debt. Presumably, if a business buys debt from a bank, it's because they think they can collect the debt for a non-trivially lower cost. Otherwise, the bank wouldn't be willing to sell the debt.

I don't know how significant this is.

MTGandP30

I hear the relationship between units and workload is pretty tenuous, though, so it might be possible to take lots of units without doing as much more work.

The unit-workload correlation is predictable, but not entirely straightforward. In particular:

  • IntroSems and other similar freshman/sophomore classes are usually easier than their units would suggest.
  • Humanities classes usually have less work per unit than sciences.
  • Almost every higher-level math class is 3 units, no matter how much work it is. You can usually expect 5 units worth of work for a 3-u
... (read more)
MTGandP00

I did notice the "venture-funded" clause. I mention it at the end of my comment. Perhaps I should have specified at the beginning.

I'd be interested to know how many startups get VC funding. Of course, at that point, you have to decide what qualifies as a startup. If a couple of guys make a website in their spare time and never seriously work on it, does that count as a startup?

2lincolnquirk
I'd call it a startup when you work fulltime on it, and it's designed for fast growth (as in Paul Graham's "Startup = Growth" essay, http://paulgraham.com/growth.html) Venture funded is a big barrier, and filters a lot of startups. But it mostly filters them by personality type. I expect that most smart, extremely resourceful, good work ethic people could get venture funding if they wanted it. These attributes are what Y Combinator filters for. But the real correlate with success (and therefore money-making) is finding product/market fit. I think that's a lot harder than getting venture funding, and a lot more important.
1Lumifer
I don't know how many startups get VC funding, I suspect the percentage is single-digit. Off the top of my head I'd say that once you hire your first employee who is not friends-and-family you can be called a startup and not just a couple of guys futzing around.
MTGandP80

I think the point of public speaking classes isn't to do networking, but to improve communication skills and therefore skill at networking.

MTGandP10

According to this page, three graduates with a Mathematical & Computational Sciences degree (an undergraduate degree similar to CS) work at financial institutions: JP Morgan, Goldman Sachs and Morgan Stanley. Keep in mind that these are graduates from the class of 2011, so they've only been out of school for 2 years; and the degree program only has about 15 graduates per year, so three alumni make a sizable fraction.

What I'm trying to say is, it's probably feasible to get a job in finance with only an undergraduate degree from Stanford.

-1Lumifer
It is, but you'll get an undergrad kind of a job. JPMorgan has 260,000 employees. The compensation expense in 2012 was about $30.5 billion which means the average total compensation (including bonuses, etc.) was about $117K per employee. That's a nice salary but seems to be roughly similar to what doctors make.
MTGandP20

From this paper, the average startup exits with $10 million, lasts 4 years until exit, and has 1.4 founders. Extrapolating from this gives about $1.5 million annual income per founder. (I think it's actually somewhat less than that because I'm not accounting for e.g. the fact that investors own a portion of the company.)

(EDIT: This 80,000 Hours post cites $1.4 million.)

I would expect the median monetary return from starting a start-up to be negative.

I think you're right. According to the same source, about 70% of startups that receive funding never mak... (read more)

5Lumifer
Nope, you're misreading the paper. Average venture-funded startup exits with $10m. Getting to be VC-funded is a huge threshold that most startups do not reach.
MTGandP20

I second the advice on startups. Starting a startup has a higher expected monetary return than anything else you can do (as far as I know); and if you do want to start a startup, Stanford is the place to do it.

80,000 Hours has a couple of posts about startups.

8Lumifer
Do you have data? I would expect the median monetary return from starting a start-up to be negative.
MTGandP70

Stanford sophomore here. I can offer some Stanford-specific advice. In fairness, I've only been here for a year, so you'd probably figure this stuff out pretty soon anyway, but hopefully it'll help.

  • 18.8 units per quarter is a lot. I only know a few people who are taking that much. However, I've found that taking 16 or 17 units is pretty feasible (assuming you don't have any other major undertakings such as research or a part-time job).
  • This may be obvious to you, but I wish someone had told me this: Go to career fairs. At Stanford, unlike at most univers
... (read more)
0D_Malik
Thanks, I forgot to get that sanity-checked. I figured that each unit is 25 minutes a day, or 35 if you only work during the week, so 4 units isn't that much extra when you're already working 6.5 hours or 9 hours a day. But I guess it could be a lot since it would mainly cut into social time. I hear the relationship between units and workload is pretty tenuous, though, so it might be possible to take lots of units without doing as much more work. Thanks for the other advice also! I'll go to career fairs, probably at least minor in CS, and sign up for THINK. Here's a graph of salary by major including graduate majors. CS still seems to win out, though the dataset is small.
7Izeinwinter
(US) Law is a bad idea. That job market has been supersaturated by too many people taking that advice already. Look up job statistics and debt burdens for recent law-graduates if you want to be really depressed. Finance will hopefully get regulated into oblivion in the nearish future.
MTGandP00

Although he had the right idea, I think this author's analysis was rather poor. I don't think he did a good job of modelling the importance of different kinds of typing strains. I like Colemak a lot better.

MTGandP00

Is there actually evidence that the traditional method of touch typing, where each finger is assigned a keyboard column and returns to the "Home Row" after striking a key, is at all faster, more efficient, or ergonomically sound than just typing intuitively?

I don't know of any studies (although they probably exist), but (a) touch typists I know are much faster than touch typists I don't know, and (b) the world's fastest typists are, as far as I know, all touch typists. Sean Wrona, currently the world's fastest typist, uses touch typing. So did Barbara Blackburn, the previous world's fastest typist.

MTGandP10

your chance of beating index fund performance over the long term is tiny.

Isn't it more like 50%?

gwern160

No; you are incurring extra fees due to your likely extra trading, diseconomies of scale, and uncompensated risk due to less diversification.

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