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throwphoton

148 karma · joined April 27, 2020

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throwphoton··on We Chat, They Watch
Please submit those stories to HN!
throwphoton··on Scientists create antibody that defeats coronavirus in lab
The flu doesn't generally involve rolling the dice so quickly that morgues run out of space.
throwphoton··on The housing market faces its next crisis as May rent and mortgages come due
If housing is profitable, in the sense of offering appreciation above the general rate of inflation, then it becomes less affordable to the next buyer, who has to fork over a larger percentage of their lifetime earnings to live there.

It's unfortunate that this appreciation has progressed to the point where nearly all of a family's wealth is tied up in their home, as it is not a risk-free asset to hold.

throwphoton··on New 13-inch MacBook Pro
Apple should simply re-release the pre-touchbar 2013 Macbook Pro, with USB-C ports.

"Peak MacBook Pro" was 2013 (once they fixed the screen-coating deterioration).

throwphoton··on New 13-inch MacBook Pro
The touch bar forces you to look at what you're doing in a place that should strictly be muscle-memory, and it's a flat surface that isn't safe to touch in an area where you rest your hands.

More than once I've hit the "back" button and inadvertently evicted myself from a browser video call, just by putting my hands on the keyboard.

tl;dr - Glad they brought back the escape key, now get rid of the rest of the touch bar.

throwphoton··on Wells Fargo temporarily suspending applications for home-equity lines of credit
It is the self-collateralization that is circular, not my thinking! Not all credit markets work like this; instead expecting as collateral something you actually own, and making margin calls when the value of that collateral falls.
throwphoton··on Wells Fargo temporarily suspending applications for home-equity lines of credit
For home loans, the collateral is the house, which is strange because the house doesn't truly belong to the borrower until the loan is paid off. Deeper still, the conditions where home loans are risky are the same conditions where home prices are risky.

In the extreme, a home buyer borrows a million dollars to buy an expensive house, the economy tanks before the first payment, the borrower walks away, and the bank gets a house worth $400K.

I'm not sure the "right collateral" even exists for home loans, it's a weird case where the "collateral" is the item being purchased on credit instead of something the borrower actually has.

throwphoton··on Universa tail fund returned 3,600% in March
I think the thesis of this type of trading is that black swan events are underestimated in the market, making far out-of-the-money options (i.e. insurance against unlikely events) sufficiently cheap that you can make money in the long run even if you lose money on 99.9% of days.
throwphoton··on Rules of thumb for a 1x developer
I'm in my 40s in the SF Bay Area and recently landed a new software development job. The process took several months.

My initial interviews were disastrous; it had been many years since my last job search and I didn't know I wasn't prepared for the "leetcode era". Drilling on "leetcode medium" problems with a time limit got me to the point where I was at least in the game that's being played nowadays.

It wasn't pretty, but eventually I got around to progressing and getting an offer instead of getting "nope'd" at the early stages. The job-interview repertoire has definitely changed in the last 15 years though, and it takes some work to get conversant with it.

throwphoton··on How have lack of travel and increased social isolation affected mathematics?
You could also fit a large assortment of gourmet meats into a stack of shoeboxes, but it's preferable to display them in a way that whets the observer's appetite.
throwphoton··on U.S. Economy Shrinks at 4.8% Pace, Signaling Start of Recession
> But we have to work together to fix it

What, concretely, does this mean, especially if creditors are pressuring people to return to work to keep up with their payments, and returning to work is a public and personal health hazard?

throwphoton··on iPhone SE: The One-Eyed King?
> If it is absolutely obsolete, why is it still present on Apple's laptops?

I suspect Apple sometimes recognizes when they make a wrong turn. They'll never put the headphone jack back in the phone, or remove the touchbar from the laptop, because they would lose face if they did so. But they'll avoid compounding mistakes; as such the headphone jack remains on the laptop.

throwphoton··on Ask HN: What scientific phenomenon do you wish someone would explain better?
Absorption spectra baffle me and I've never seen an explanation that helps me understand.

It seems conceptually simple, except the requirement that the energy of an photon exactly match some required energy in order to be absorbed seems really unlikely, since photon energy not a discrete quantity, and varies according to doppler effects and other things.

It seems like the vast majority of photons would just fly through the universe without interacting with anything, unless there are other ways for photons to interact with matter besides being absorbed. (If there are other ways, they are seemingly never mentioned as a potential alternative fate for the photon).

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