Jacob Falkovich

Writes Putanumonit.com and helps run the New York LW meetup. @yashkaf on Twitter.

Comments

Above the Narrative

I agree that advertising revenue is not an immediate driving force, something like "justifying the use of power by those in power" is much closer to it and advertising revenue flows downstream from that (because those who are attracted to power read the Times).

I loved the rest of Viliam's comment though, it's very well written and the idea of the eigen-opinion and being constrained by the size of your audience is very interesting.

Jacob's Twit, errr, Shortform

Here's my best model of the current GameStop situation, after nerding out about it for two hours with smart friends. If you're enjoying the story as a class warfare morality play you can skip this, since I'll mostly be talking finance. I may all look really dumb or really insightful in the next few days, but this is a puzzle I wanted to figure out. I'm making this public so posterity can judge my epistemic rationality skillz — I don't have a real financial stake either way.

Summary: The longs are playing the short game, the shorts are playing the long game.

At $300, GameStop is worth about $21B. A month ago it was worth $1B, so there's $20B at stake between the long-holders and short sellers.

Who's long right now? Some combination of WSBers on a mission, FOMOists looking for a quick buck, and institutional money (i.e., other hedge funds). The WSBers don't know fear, only rage and loss aversion. A YOLOer who bought at $200 will never sell at $190, only at $1 or the moon. FOMOists will panic but they're probably a majority and today's move shook them off. The hedgies care more about risk, they may hedge with put options or trust that they'll dump the stock faster than the retail traders if the line breaks.

The interesting question is who's short. Shorts can probably expect to need a margin equal to ~twice the current share price, so anyone who shorted too early or for 50% of their bankroll (like Melvin and Citron) got squeezed out already. But if you shorted at $200 and for 2% of your bankroll you can hold for a long time. The current borrowing fee is 31% APR, or just 0.1% a day. I think most of the shorts are in the latter category, here's why:

Short interest has stayed at 71M shares even as this week saw more than 500M shares change hands. I think this means that new shorts are happy to take the places of older shorts who cash out, they're only constrained by the fact that ~71M are all that's available to borrow. Naked shorts aren't really a thing, forget about that. So everyone short $GME now is short because they want to be, if they wanted to get out they could. In a normal short squeeze the available float is constrained, but this hasn't really happened with $GME.

WSBers can hold the line but can't push higher without new money that would take some of these 71M shares out of borrowing circulation or who will push the price up so fast the shorts will get margin-called or panic. For the longs to win, they probably need something dramatic to happen soon.

One dramatic thing that could happen is that people who sold the huge amount of call options expiring Friday aren't already hedged and will need to buy shares to deliver. It's unclear if that's realistic, most option sellers are market makers who don't stay exposed for long. I don't think there were options sold above the current price of $320, so there's no gamma left to squeeze.

I think $GME getting taken off retail brokerages really hurt the WSBers. It didn't cause panic, but it slowed the momentum they so dearly needed and scared away FOMOists. By the way, I don't think brokers did it to screw with the small people, they're their clients after all. It just became too expensive for brokerages to make the trade because they need to post clearing collateral for two days. They were dumb not to anticipate this, but I don't think they were bribed by Citadel or anything.

For the shorts to win they just need to wait it out not get over-greedy. Eventually the longs will either get bored or turn on each other — with no squeeze this becomes just a pyramid scheme. If the shorts aren't knocked out tomorrow morning by a huge flood of FOMO retail buys, I think they'll win over the next weeks.

Is Rationalist Self-Improvement Real?

This is a self-review, looking back at the post after 13 months.

I have made a few edits to the post, including three major changes:
1. Sharpening my definition of what counts as "Rationalist self-improvement" to reduce confusion. This post is about improved epistemics leading to improved life outcomes, which I don't want to conflate with some CFAR techniques that are basically therapy packaged for skeptical nerds.
2. Addressing Scott's "counterargument from market efficiency" that we shouldn't expect to invent easy self-improvement techniques that haven't been tried.
3. Talking about selection bias, which was the major part missing from the original discussion. My 2020 post The Treacherous Path to Rationality is somewhat of a response to this one, concluding that we should expect Rationality to work mostly for those who self-select into it and that we'll see limited returns to trying to teach it more broadly.

The past 13 months also provided more evidence in favor of epistemic Rationality being ever more instrumentally useful. In 2020 I saw a few Rationalist friends fund successful startups and several friends cross the $100k mark for cryptocurrency earnings. And of course, LessWrong led the way on early and accurate analysis of most COVID-related things. One result of this has been increased visibility and legitimacy, and of course another is that Rationalists have a much lower number of COVID cases than all other communities I know.

In general, this post is aimed at someone who discovered Rationality recently but is lacking the push to dive deep and start applying it to their actual life decisions. I think the main point still stands: if you're Rationalist enough to think seriously about it, you should do it.

Review: LessWrong Best of 2018 – Epistemology

There's a whole lot to respond to here, and it may take the length of Surfing Uncertainty to do so. I'll point instead to one key dimension.

You're discussing PP as a possible model for AI, whereas I posit PP as a model for animal brains. The main difference is that animal brains are evolved and occur inside bodies.

Evolution is the answer to the dark room problem. You come with prebuilt hardware that is adapted a certain adaptive niche, which is equivalent to modeling it. Your legs are a model of the shape of the ground and the size of your evolutionary territory. Your color vision is a model of berries in a bush, and your fingers that pick them. Your evolved body is a hyperprior you can't update away. In a sense, you're predicting all the things that are adaptive: being full of good food, in the company of allies and mates, being vigorous and healthy, learning new things. Lying hungry in a dark room creates a persistent error in your highest-order predictive models (the evolved ones) that you can't change.

Your evolved prior supposes that you have a body, and that the way you persist over time is by using that body. You are not a disembodied agent learning things for fun or getting scored on some limited test of prediction or matching. Everything your brain does is oriented towards acting on the world effectively. 

You can see that perception and action rely on the same mechanism in many ways, starting with the simple fact that when you look at something you don't receive a static picture, but rather constantly saccade and shift your eyes, contract and expand your pupil and cornea, move your head around, and also automatically compensate for all of this motion. None of this is relevant to an AI who processes images fed to it "out of the void", and whose main objective function is something other than maintaining homeostasis of a living, moving body.

Zooming out, Friston's core idea is a direct consequence of thermodynamics: for any system (like an organism) to persist in a state of low entropy (e.g. 98°F) in an environment that is higher entropy but contains some exploitable order (e.g. calories aren't uniformly spread in the universe but concentrated in bananas), it must exploit this order. Exploiting it is equivalent to minimizing surprise, since if you're surprised there some pattern of the world that you failed to make use of (free energy). 

Now if you just apply this basic principle to your genes persisting over an evolutionary time scale and your body persisting over the time scale of decades and this sets the stage for PP applied to animals.

For more, here's a conversation between Clark, Friston, and an information theorist about the Dark Room problem.

Review: LessWrong Best of 2018 – Epistemology

Off the top of my head, here are some new things it adds:


1. You have 3 ways of avoiding prediction error: updating your models, changing your perception, acting on the world. Those are always in play and you often do all three in some combination (see my model of confirmation bias in action).
2. Action is key, and it shapes and is shaped by perception. The map you build of any territory is prioritized and driven by the things you can act on most effectively. You don't just learn "what is out there" but "what can I do with it".
3. You care about prediction over the lifetime scale, so there's an explore/exploit tradeoff between potentially acquiring better models and sticking with the old ones.
4. Prediction goes from the abstract to the detailed. You perceive specifics in a way that aligns with your general model, rarely in contradiction.
5. Updating always goes from the detailed to the abstract. It explains Kuhn's paradigm shifts but for everything — you don't change your general theory and then update the details, you accumulate error in the details and then the general theory switches all at once to slot them into place.
6. In general, your underlying models are a distribution but perception is always unified, whatever your leading model is. So when perception changes it does so abruptly.
7. Attention is driven in a Bayesian way, to the places that are most likely to confirm/disconfirm your leading hypothesis, balancing the accuracy of perceiving the attended detail correctly and the leverage of that detail to your overall picture.
8. Emotions through the lens of PP.
9. Identity through the lens of PP.
10. The above is fractal, applying at all levels from a small subconscious module to a community of people.
 

What trade should we make if we're all getting the new COVID strain?

The new strain has been confirmed in the US and the vaccine rollout is still sluggish and messed up, so the above are in effect. The trades I made so far are buying out-of-the-money calls on VXX (volatility) and puts on USO (oil) and JETS (airlines) all for February-March. I'll hold until the market has a clear, COVID related drop or until these options all expire worthless and I take the cap gains write-off. And I'm HODLing all crypto although that's not particularly related to COVID. I'm not in any way confident that this is wise/useful, but people asked.

My Model of the New COVID Strain and US Response

I don't think it was that easy to get to the saturated end with the old strain. As I remember, the chance of catching COVID from a sick person in your household was only around 20-30%, and at superspreader events it was still just a small minority of total attendees that were infected.

What trade should we make if we're all getting the new COVID strain?

The VXX is basically at multi-year lows right now, so one of the following is true:
1. Markets think that the global economy is very calm and predictable right now.
2. I'm misunderstanding an important link between "volatility = unpredictability of world economics" and "volatility = premium on short-term SP500 options".

What trade should we make if we're all getting the new COVID strain?

Some options and their 1-year charts:
JETS - Airline ETF

XLE - Energy and oil company ETF

AWAY - Travel tech (Expedia, Uber) ETF

Which would you buy put options on, and with what expiration?

Load More