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coffeemug

16,039 karma · joined August 14, 2007

spakhm.com, coffeemug [at] gmail [dot] com
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coffeemug··on Jepsen Disputes MongoDB's Data Consistency Claims
Imagine how I feel about it :)
coffeemug··on Surviving Depression
At least in SF any therapist worth their salt usually has a waiting list. Demand for services far outstrips supply. Even if they didn't care, they really have no vested interest in you coming back because there is a line of twenty people right behind you waiting to get in.
coffeemug··on Microsoft announces Lists, a new Airtable-like app
> How do you upgrade the UX of a legacy product like Access without pissing off everyone?

Incrementally.

coffeemug··on Finding new physics will require a new particle collider
The federal government just wrote a $2T stimulus check of funny money they pulled out of thin air to (largely) cover for their incompetence in handling the pandemic. But $10B (that's a factor of 200x less!) for basic physics research is somehow too expensive? Our priorities are way off.
coffeemug··on Show HN: Tracking stock trading by US Senators
Very cool. Where is the data coming from?
coffeemug··on Why is the stock market rallying when the economy is so bad?
> [...] these days, so as time passes, removing their stock price from the price at IPO, their stock price becomes based on perception--not even perception of the reality [...]

John Maynard Keynes developed this idea (that came to be known as Keynesian beauty contest[1]) in 1936. This isn't a new property of the market, it has always been the case.

> when companies do pay dividends or buy back stock, it's sometimes done by borrowing money

It's not clear that this is a problem, given that cash is basically free (though they do have to pay back the principal). I'd be interested to see what proportion of dividends and buybacks comes from borrowed cash. I suppose calculating such a thing would be very difficult, but it'd be interesting to see some analysis on this.

> if 90% of people pull out of the stock market, it's quite possible for the stock market to go up

What if 90% significantly cut consumption? Ultimately the companies have to sell their products to somebody.

[1] https://en.wikipedia.org/wiki/Keynesian_beauty_contest

coffeemug··on Oil's Collapse Is a Geopolitical Reset in Disguise
Oh shit. You’re right. I googled “Harvard demographics” and got a nice chart from US department of education. I just looked at it again, and it looks like it’s data for _all_ students in the U.S. Sorry to the OP. I was wrong. I’ll edit my posts in a minute.
coffeemug··on Oil's Collapse Is a Geopolitical Reset in Disguise
EDIT: THE FOLLOWING DATA IS WRONG. (I foolishly misread a chart. Leaving this up for continuity, but the numbers are completely off.)

---

No. Only 25% of households in the US have annual income between $35,000 and $75,000. About one in five families in the US is below the poverty line. So middle class students are over represented at Harvard. Students from poor families are only slightly underrepresented, and considering that household income and academic achievement are correlated, it’s actually a testament to their efforts to have socially conscious admissions. The facts do not support your argument. On this you are simply wrong.

coffeemug··on Oil's Collapse Is a Geopolitical Reset in Disguise
EDIT: THE FOLLOWING DATA IS WRONG. (I foolishly misread a chart. Leaving this up for continuity, but the numbers are completely off.)

---

Less than a third of Harvard students come from a household with income greater than $100,000/year. Almost half the students come from households with income between $30,000 and $75,000/year. One in six students comes from a poor family.

Harvard is firmly middle class. The data simply doesn’t support the argument that Harvard admissions is some old money New England conspiracy.

coffeemug··on Why We Can't Build
I haven't read Ezra Klein's book, but as far as I can tell Ben Thompson's articles are mostly just-so stories[1]. His model seems to be able to predict everything that happens in tech, and when your model predicts everything that usually means it isn't very powerful at all.

Here's a thought experiment: can you use aggregation theory to make sufficiently powerful predictions to beat the stock market in the tech sector? Can Ben? My strong guess is that the answer is to both questions is no.

[1] https://en.wikipedia.org/wiki/Just-so_story

coffeemug··on Ask HN: I'm a software engineer going blind, how should I prepare?
> Since my diagnosis I've slowly developed a crippling anxiety centered around a feeling that I need to figure out the rest of my life before it's too late.

I can't imagine how you must be feeling, so take what I'm about to say with a grain of salt.

Losing your sight is undoubtedly going to be one of the top five most important events in your life that will split everything into "before" and "after". Maybe it will be the most important. But it's still one of the top five. And right behind those five there will be another five that aren't quite as important, but still pretty close. Life has a way about it like that. (Some of us get dealt a better hand than others of course, but there are precious few for whom all top ten life events have smooth continuity and are all ecstatically positive).

I'm by no means telling you to take this lightly or not to prepare. It sounds like you're throwing yourself into this thing and doing the best you can to set yourself up for future success. That's great. But do take a long view on these things. You have fifty years ahead of you, and crazy shit will happen that will knock you off your horse maybe every decade or so.

It's not exactly that your anxiety is unwarranted, just that it's not telling you the whole story. This is (hopefully) going to be a long, long road. Aiming to have everything buttoned down at 24 (or 34, or 54) is not a reasonable expectation, blind or not.

Anyway, best of luck to you. If you want, I can put you in touch with a friend who's a developer with no sight. (Also happy to just talk to you for emotional support) My e-mail is in the profile.

coffeemug··on It’s Time to Build
The way to solve this problem is by (largely) adopting the premise of the Coase Theorem, but we've created an environment where that's impossible. So now a community of a few thousand can hold millions of people and hundreds of billions of wealth hostage.
coffeemug··on It’s Time to Build
We used to be able to accomplish things like raising of Chicago[1] over 150 years ago but we can't move a few tiny communities in the middle of I-5 to build an infrastructure project of enormous economic value in 2020? I think that's case in point.

[1] https://en.wikipedia.org/wiki/Raising_of_Chicago

coffeemug··on It’s Time to Build
I don't think "put your money where your mouth is" is a good argument. A16z can be subject to prisoner's dilemma of our collective cultural decline and simultaneously have genuine desire to get out of this predicament we're all in.

He says it right there in the blog post-- the problem is desire. For example, someone is reliably making tons of money in China stamping cities into the ground and building thousands of miles of high speed rail. Why can't we? Doing these things is hard in a sense that we seem unable to get collective wherewithal to do it. It's not hard in a sense that a cure for cancer is.

They can't invest in things nobody will let them build. Who in their right mind would invest in high speed rail from SF to LA knowing ex ante they'll deal with twenty years of regulatory quagmire for the project to eventually be killed by a thousand bureaucrats?

(And I think the bureaucrats are the symptom, not the cause. If we wanted things built the bureaucrats would be out on the street in three months. The cause is cultural decline.)

coffeemug··on Yelp lays off 1000, furloughs 1100
That's a really charitable explanation and I think it explains some percentage of labor, but not nearly all of it (not even the majority of it, IMO). Yes, there is more going on behind the scenes in every company than you'd ever know about. But I think the majority of labor follows the pareto principle-- there are maybe 100 employees in every company of, say, 1000 people that do nearly all the work, and 900 employees that do very little to nothing at all at best (and produce negative value at worst).

Why that is the case in every business, I haven't been able to figure out. I suspect it's because when businesses reach that size, the efficient market effects become greatly overstated in the short term, so these businesses naturally acquire a lot of fat.

One piece of evidence for this is that private equity exists. You can buy a business, fire a quarter of the people, then sell it and make a lot of money without hurting the operations at all.

coffeemug··on “A Cold War Every Day” inside Apple's internal tools group
Why does eliminating the bullshit layer mean enormous amounts of power have to be concentrated in any one person's hands? You can hire two sysadmins.
coffeemug··on “A Cold War Every Day” inside Apple's internal tools group
This model doesn't quite make sense to me. The layer of idiocy is extremely expensive-- not only do you have to pay their salaries and associated operations costs, but they also introduce enormous inefficiencies. Everything moves slower. It's hard to find important information because it's lost in a sea of bullshit. People make locally optimal decisions that are suboptimal for the company.

The costs of all this are enormous. Is maintaining this army really cheaper than just handing the reigns to ops people and paying them more in proportion to their increased leverage?

coffeemug··on “A Cold War Every Day” inside Apple's internal tools group
Could you explain this more? Who are the operations people? (finance? HR?) Who is the money side? (product? sales?) How exactly would "operations people" have leverage if they knew how the "money side" worked? Like, what specifically would they do? Also leverage over whom? And ultimately, couldn't whoever all these groups eventually report to (the CEO but possibly lower) resolve all this by firing some people?

I don't have a good model of how these things work. I encountered it first hand, but couldn't develop a good model after a long time of thinking about it. Tons of things happened that I didn't understand at all, and I couldn't understand why higher-level people wouldn't just resolve it.

Help understand this better?

coffeemug··on GitHub shuts off access to Aurelia repository, citing trade sanctions
To pick an extreme example, do you seriously believe the US has less legitimacy in this respect than North Korea?
coffeemug··on Hard Startups
Do you seriously think white male founders don't get asked these questions?
coffeemug··on Nobody Cares (2011)
People who love you care, to a point. In the limit case if you abuse alcohol and can't get your act together, your line of credit with your loved ones will run out (with parents being the one exception)
coffeemug··on Nobody Cares (2011)
Applies to life too, but easier said than done.
coffeemug··on How to Invest in Startups
YC (if that counts) and a16z have a reputation for being very good at it.
coffeemug··on A Big Little Idea Called Legibility (2010)
What are some concrete examples of career advancing actions you took based on these principles, that you otherwise wouldn’t have known to take?
coffeemug··on Psilocybin found safe for consumption in largest ever controlled study
Counter-anecdote: I've experimented with this stuff extensively in various settings and have known many other people who did, and in my experience it's unequivocally bullshit.

Here's what happens.

First, any given trip alleviates depression for about a month or two. That makes sense to me in a sense that the word "trip" isn't a coincidence-- a really fun intense vacation in a foreign country also alleviates depression for a month or two. You swear that when you come back things will be different, but then you have to answer slack messages at 9pm, and your project is slipping at work, and your wife is flirting with strangers every time you go to a bar, and well... in a month or two you're back to feeling exactly the same way you did before (until you take the next vacation).

Second, people who discover psychedelics go on a multiyear quest for enlightenment. They keep taking various drugs, keep feeling like they understand things better and better, get sucked into the psychedelic social vortex of other truth-seekers, and generally believe that their life is full of meaning and is going to turn around at any moment. Except by any objective measure they're still nervous wrecks-- they have every physiological symptom of stress and depression, and aside from temporary alleviation of their symptoms (see part one), they always regress to the mean.

Third, after a few years of this people eventually reach a fork. Most people realize that their psychonautic journey is at best leading them in circles, and at worst is causing their life to spiral down the drain. So they give it up, get a job without 9pm slack messages (or find a better way to adjust to stress), marry someone who isn't constantly on the verge of cheating, start doing regular exercise, and generally find a way to settle into a reasonably balanced life.

A small minority of people double down, grow out their (usually grey by then) hair down to their shoulders, go to festivals and workshops, talk of energy and chi and chakras, stare into the eyes of strangers, and touch each other's faces.

Generally speaking, I haven't run into anyone yet who found a third path. So, while I'd be the first to admit I'm wrong and celebrate if this proves to actually work, if I were a betting man I'd bet against at any reasonable odds and sleep secure in the knowledge that my money is safe.

coffeemug··on The Lesson to Unlearn
You don’t need edit distance. The solution is literally a for loop and three if statements. The fact that you can’t stop and think for a few seconds about how you might solve this means you’ve been on autopilot for many years now. This is a proxy test to weed out people who work on autopilot and never think.
coffeemug··on The Lesson to Unlearn
No, you cannot. IQ is highly correlated with wealth and is also highly heritable. So in all likelihood what you've observed is that smart kids win academic competitions, and also happen to be from rich families. If you take a bunch of kids with an IQ of 100 (or 115, or even 130) and put them into private schools they'll do a little better but they won't be winning any academic competitions.
coffeemug··on The Lesson to Unlearn
> It's because he doesn't believe getting into YC is the achievement.

But so much of YC felt (and probably does more so now) like you're being judged all the time. Which makes total sense to me, because seeking prestige is so fundamental to human nature. That co-evolved with social cooperation in a virtuous cycle.

If pg really believed what he wrote in this essay, YC would be structured very differently. The moment pg allowed some companies/founders to have better access to him than others, or the moment he talked about how some founders are better than others, he implicitly set up a criteria for judging founders and their companies. And people will always naturally feel envy and try to hack that criteria. But a precondition for doing good original work is not feeling judged. So he should have gone on a crusade to completely eliminate all forms of favoritism if he wanted to maximize the odds of success for a modal company. But that's not what he actually ended up doing. At all.

Now the question is, is the essay wrong or is the YC structure/culture wrong. If I were a betting man, I'd put all my money on the former every single time, and I think I'd never come lose that bet once.

coffeemug··on The Lesson to Unlearn
Don't know about Page and Brin, but according to the Netflix documentary Gates won state-level math Olympiad at a level three grades higher than his own. So he wasn't a modal child. You can't draw any conclusions from that about education at scale.
coffeemug··on The Lesson to Unlearn
Companies are this way too. The best companies are all run by OKRs and metrics. But if you peek under the hood, all of it is insanely hackable; you have to be naive to try and actually meet your explicitly stated objectives because that's not how you get promoted.

It reminds me of a quote from The Elephant in the Brain. I don't remember the wording exactly, but it's something like "if there is a behavior in a large group of people that doesn't make sense to you, not only is it by design, but it's also probably the whole point."

Incidentally, I was also struck by how much of YC was (in 2009) about hacking venture capital. But lots of people from that era now say this behavior is unethical disavow all knowledge that it was ever actively promoted. It's like we lived through different realities.

If I were to steelman The Lesson to Unlearn I think I'd say this. On an individual level there is enormous benefit to learning how to operate without hacking a test. That's how you do great work; that's what original thinking is. On a societal level this seems unshakable. But societies have made dramatic shifts in behavior and social organization before. From hunter gatherers to farmers to city dwellers, for example. So while this is hard to imagine it might just be that-- lack of imagination. The social return to abandoning this system might indeed be enormous.

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