HNHacker News
TopNewBestAskShowJobs

andy81

297 karma · joined February 3, 2021

submissionscomments
andy81··on Why do arrays start at 0?
English also has that "mezzanine" concept, for partial floors with a balcony over the main floor. You see it sometimes on elevators as an M.
andy81··on Ask HN: Higher order derivatives in everyday life?
Card games. e.g. MtG or LoR.

You've got to deal X damage to win.

You could directly cast spells at an opponent each turn.

Or instead you can play units or destroy enemy units to affect the amount of damage being done each turn.

Certain cards even increase the amount you can increase your damage each turn, e.g. by reducing costs, drawing cards on future turns, or improving deck contents.

andy81··on Lockdown: The coming war on general-purpose computing (2012)
Many people's only computer is locked to programs from a single source owned by the operating system developer, and adware impossible to remove without defating the device's security.

Where downloading apps from another source is possible, multiple levels of popups are triggered with warning messages optimised through A/B testing to minimise clickthrough rates.

Widewine and similar hardware DRM are now standard.

General purpose computing is still alive, but it's taken serious hits.

andy81··on FedEx to close data centers, retire mainframes
IBM i on modern Power machines is fine as far as performance goes.

The hideous frontend of greenscreen RPG programs is optional, you could replace them with Java if anyone cared enough about UX for internal tools (they don't).

The hard part with that stack is getting RPG devs - most of them are 50+ and expensive.

andy81··on All Ponzi schemes topple eventually
That feels overly pedantic, since bitcoin does function as a ponzi from the investors' perspective if not a textbook one.

The difference is that miners are constantly pulling dollars out of the system rather than some sinister individual constantly pulling dollars out of the system. Hopefully we'll end up with a new word for "decentralized ponzi" to differentiate them in future.

Obviously there are actual ponzis involving bitcoin (e.g. Tezos/Nexo/BlockFi/Crypto.com, possibly USDT/USDC) but those aren't bitcoin itself. Maybe that's part of the confusion.

andy81··on Update on Hiring Plans
N=3 is an absurd sample size to base hiring or investment decisions on, especially considering that each halving will have a smaller effect than the previous.
andy81··on How we put IPFS in Brave (2021)
Web3 has also been used to describe web pages designed for easy parsing.

Reader view, tools for the visually impaired, and browser automation are actually useful and commonly used, so that definition win the title for me.

There are certainly useful distributed web tools (e.g. email, TOR, IRC, Matrix, self-hosting, bittorrent), but they're the opposite of recent trends towards monopoly.

The distributed meaning is absolutely poisoned by blockchain at this point.

andy81··on The problem with Bitcoin miners
You'd be competing against others who steal their electricity or have it subsidised (including pollution, resource depletion, regulatory arbitrage, financial crime and other externalities).

If you can take advantage of some of those and don't mind that the money isn't being generated so much as taken from other people then it's a great idea.

andy81··on The problem with Bitcoin miners
Specialized mining hardware is an environmental disaster but it does make 51% attacks more difficult.

With POW on general purpose CPUs, anyone can rent cloud processing to mine for short bursts in a way that's just not possible for attacks on bitcoin.

andy81··on The problem with Bitcoin miners
Bitcoin mining is almost entirely ASICs. GPUs aren't much good at the algorithm used.
andy81··on Tether starting to lose its peg too, after Terra did
Anyone making $500m/year legit could rug for $20bn+, so they walk away before that point.

Tether have a great business model but seem to spend 90% of their time falsifying reserves instead. It certainly gives the impression they're planning on taking the capital rather than interest. They're already in breach of the NYAG agreement, with three+ more cases pending.

It actually seems like a great project for e.g. Fidelity or Vanguard to set up a mutual fund that doesn't pay interest. With the name recognition it would be immediate #1 stablecoin assuming they offered the same level of audit scrutiny and reserves breakdown as their other products (i.e. 100x anything offered in the cryptocurrency space currently).

andy81··on Tether starting to lose its peg too, after Terra did
Monero still tries to fit in this niche.

The only thing it's useful for is financial crime though - if your problem is just making a payment you can do it in dollars relatively easily and safely.

andy81··on Spreadsheets Are Hot–and Cranking Out Complex Code
For read-only workflows Power Query is the killer feature of the past decade.

For writes, there's Airtable, Google Forms, PowerApps etc.

andy81··on An interactive 19-lesson course to master VSCode's keyboard shortcuts
Works now, probably just pebcak
andy81··on An interactive 19-lesson course to master VSCode's keyboard shortcuts
Shift isn't picked up on Firefox. Am I missing something or is this Chrome/Desktop only?
andy81··on An Opinionated Guide to Xargs
Thanks, we were thinking of the same thing.
andy81··on An Opinionated Guide to Xargs
Today I appreciated Powershell
andy81··on Little kids burn so much energy, they’re like a different species, study finds
Must have been bad- the normal recommendation for norovirus is to avoid hospital because it's so infectious.

e.g. https://www.nhs.uk/conditions/norovirus/

That's what isolation wards are for, I suppose.

andy81··on $600M taken in largest DeFi hack to date
Not completely true.

Dogecoin for example has some config changes to block size that make transactions cheaper.

It's factually "better" as far as code goes.

andy81··on Why do we use R rather than Excel?
Data tables and keeping one tab per table solves all of those.

Sounds more like an issue with the skill of average excel users than a feature gap.

andy81··on Advancing Excel as a programming language [audio]
That's a common opinion.

The object model and IDE are a big part of it though, maybe even more so than syntax horrors like while..wend vs do while..loop.

andy81··on Request for comments regarding topics to be discussed at Dark Patterns workshop
Let's not give Amazon a free ride, cancelling the Prime trial was some real bullshit last time I tried.

The option was hidden behind several pages of "Here's what you'll miss out on" and "You still have x days remaining, why not check out these shows" and "confirm" buttons with slightly different position/text/color.

andy81··on Subsidiary of Toyota to acquire Lyft’s self-driving car division
Not a problem if you only sell to the bottom 50% of drivers.
andy81··on What I Think of Bitcoin
From the article that caused the panic-

https://crypto-anonymous-2021.medium.com/the-bit-short-insid...

The last nail in the coffin was when I found out about the lack of visible reserves. If Tether Ltd. really was taking in 1 USD for each Tether it issued, then it should have as many dollars in its bank account as there are issued Tethers. And it turns out we can check if that’s true! Tether Ltd.’s bank is Deltec bank in the Bahamas, and the Bahamas discloses how much foreign currency its domestic banks hold each month.

The answer was — at least up to the end of September 2020 — not nearly enough:

From January 2020 to September 2020, the amount of all foreign currencies held by all the domestic banks in the Bahamas increases by only $600 million — going from $4.7B to $5.3B. (The table is in Bahamian dollars, but the Bahamian dollar is pegged to the US dollar, so 1 BSD = 1 USD.)

But during the same period, total issued Tethers increased by almost $5.4 billion — going from $4.6B to $10B!

← PreviousPage 4 of 4