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Patrick McKenzie Profile picture
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Feb 5 • 4 tweets • 1 min read
If I were a cynical man, I’d say you could write a cron job to flag clients for which the blockchain offered you an excuse to terminate loan contracts and then *time doing so* when maximally in your interest, harvesting lots of free option value.
“Compliance as a profit center!”
In this case, the borrower had economic exposure similar to being short a OTM put on Bitcoin. That implies that the lender has economic exposure to that decision similar to being long an OTM put on Bitcoin.

That’s a position that has some value.
Options would be much, much more valuable if they let the owner pick the strikes retroactively, of course.

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Patrick McKenzie Profile picture
Feb 7
In "surprisingly good experiences in government and healthcare IT", the HER-SYS system for tracking covid symptoms through self-reports also includes same symptoms input by healthcare professionals and public health workers (typically after followup call or on-site health check).
I kinda feel a little unhappy that a nationwide database with a competent web frontend that can join records by primary key is surprisingly novel, but I will take competence where I can get competence.
(Also feels surprisingly novel to read doctor's notes, which is something I've had very few experiences of in the healthcare system of either nation I've lived in. An interesting look at a norm in a state of flux.)
Read 5 tweets
Patrick McKenzie Profile picture
Feb 7
I should diagram this infra out for a BAM episode once I’m feeling better.

And, to tweak crypto’s nose a bit: it /would certainly be more efficient to replace a decentralized network with a central actor doing all functions.
(It is not widely understood by retail investors that while a stock, for example, is *listed* on one stock exchange it *trades* on many separate physically distinct venues which they access simultaneously through their broker.)
Another fun example of a thing not well understood: decoupling brokerages and clearing functions is in investor interest but sometimes prevents some investors from doing something they want to do.

See the RobinHood/GameStop bruhaha.
Read 5 tweets
Patrick McKenzie Profile picture
Feb 7
Broadly agree with this.

And since it’s obvious I do w/r/t my employer I’ll add that it was also a core design principle at Starfighter; that’s why we put everyone immediately in a live GUI that used the real API inspectable through browser.
Also why we invested effort into good docs and good error messages. (And if I did it again today I’d steal one thing Stripe does and make a first-party command line client available through Homebrew.)
A thing I would also probably do, if I were making engineering decisions again: all shipping products of company have two options for APIs:

a) /private/ namespace
b) it’s a real endpoint customers could call themselves with real docs, real support, real deprecation, etc
Read 4 tweets
Patrick McKenzie Profile picture
Feb 7
I know this has been well reported, a PSA: rapid deterioration after a covid infection continues to be a thing, including in relatively young and healthy people, and if you have folks close to you with it keep an eye on them.

The sad anecdote motivating this PSA:
A friend of a family member, who was young, healthy, and vaccinated, passed away recently.

They were found at home unconscious by their landlord. Their landlord, skeptical of medicine, attempted traditional $CULTURE remedies for several days to deal with acute lung failure.
There being no one else in their life that noticed their absence of several days, effective emergency medical care was not summoned, and they drowned at home.
Read 5 tweets
Patrick McKenzie Profile picture
Feb 6
There is something immensely satisfying about seeing your work pay off beautifully on mega scale structure construction in Dyson Sphere Project.

It also feels ridiculous to me as a fear of programming. Each of those dots is an individual solar sail, tracked by game. Image
And *incredibly* to me, I don’t think the game cheats. It really does do the physics simulation with all of them. It really does care about solar sail #739253’s trip through your factory versus fudging and saying “Meh the factory produces 4,000 a second so I’ll just bump…”
There’s something really, really special about this game for thinking about engineering, because you are essentially building a CPU out of NAND gates early then later programming a network stack then later doing web development.
Read 9 tweets
Patrick McKenzie Profile picture
Feb 4
Applies equally to tech investing, and I think LPs should probably just stop requiring particular numerical targets for GP contribution.

(This norm also has terrible distributional consequences for emerging managers.)
The norm is that you put up, say, 2% of the money in a fund, which is very plausibly more than the net worth of many early career tech professionals if they didn’t come from money.

Historically, most VCs didn’t have a problem with that. However.
As a (tiny) LP, I tell fund managers “Not going to ask and you don’t have to tell me; I know this is your main career focus for next 10+ years. If I didn’t trust you to care about that more than you care about money, we would not be here.”
Read 5 tweets

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