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gibybo

1,365 karma · joined June 5, 2009

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gibybo··on First atmosphere found on Earth-like planet in habitable zone of distant star
Send a lot of them and have them act as relays
gibybo··on Show HN: I'm building an AI-proof writing tool. How would you defeat it?
I clicked begin and immediately alt tabbed to ChatGPT. I took a screenshot of the prompt and pasted to ChatGPT, with the instruction "Write a 1 paragraph response as if you were a human". I alt tabbed back to the writing website and started typing ChatGPTs response. I intentionally added a few pauses in places where I thought I might pause, and deleted words a couple times. I also slightly changed the last sentence from "down, plus the assumption that..." to "down. And.." to give it the human touch of poor grammar, although I'm not sure if that mattered.

I scored 100 "Highly Authentic"

Instructions to ChatGPT:

[What's something you pretend to understand but actually don't? Why do you fake it?] Write a 1 paragraph response as if you were a human.

Response:

Honestly, I probably nod along to conversations about highly technical stuff like advanced financial instruments or super niche software internals when I only grasp the surface, because stopping to ask for a full breakdown can derail the moment or make me look out of my depth. It's not about trying to deceive anyone, it's more about social momentum and not wanting to slow things down. And I can fill in the gaps later if I need to.

gibybo··on Why you can't color calibrate deep space photos
Yes, and you would almost certainly want to automate it with a filter wheel that changes the filters for you on a schedule. However, a key advantage of a mono camera is that you don't have to limit yourself to RGB filters. You can use some other set of filters better suited for the object you are capturing and map them back to RGB in software. This is most commonly done with narrowband filters for Hydrogen, Sulfur and Oxygen which allow you to see more detail in many deep space objects and cut out most of the light pollution that would otherwise get in your way.
gibybo··on From the Transistor to the Web Browser, a rough outline for a 12 week course
They look like they could be lines of code to me.
gibybo··on Ask HN: Alternative to Mint.com?
I responded to one of their sales emails saying that I liked their service because it was free, and I wasn't interested in paying for their advice. Haven't heard from them since, but have been using the free service for years.
gibybo··on The Fed smothers capitalism in an attempt to save it
>If you mark to market the bonds these banks are carrying you can see they are insolvent.

Do you have any sources/data for this? I saw something for BofA that indicated a $110b mark to market unrealized loss, but they have roughly $200b in equity so that wouldn't make them insolvent. I don't know if that $110b included everything or just a subset of their hold-to-maturity assets and would love to see more complete data for all big the banks if you have a nicely consolidated source for it?

gibybo··on The Nettle Magic Project: Scanner for decks of cards with bar codes on edges
The "Invisible Deck" is a very famous trick. It can be purchased[1] for about $10 and just about anyone can master it in about 10 minutes. With the standard method, you don't need to memorize the deck or flip the card.

[1] https://www.amazon.com/U-S-PLAYING-CARD-COMPANY-SG_B002MI1B3...

gibybo··on John McAfee found dead in Spanish jail after court approves extradition to US
According to the linked post, Methylenedioxypyrovalerone (MDPV) aka bath salts.
gibybo··on The Ponzi Career
If you're interested in this concept, you may enjoy the novel "The Unincorporated Man" which is set in a future where everyone (except the protagonist) has personal shares traded on an open market.

It's a bit thick on ideological propaganda of the extreme capitalist/libertarian type, but I found the exploration of the concept fascinating enough to get through most of it.

gibybo··on The Expansion of the Universe
Can't they reflect that radiation away from other galaxies, or even in to their host star?
gibybo··on Coinbase Announces Listing Date of Its Stock on the Nasdaq
I think the bull case may be more about their future sources of revenue. If crypto succeeds, exchanging it with fiat may end up being only a relatively small amount of the economic activity. Traditional brokers are not likely to be able to compete with Coinbase in those future markets.

Of course it's really hard to predict what those future markets might be or how much value Coinbase will be able to extract from them, so I have no idea if $68 billion is a reasonable valuation.

gibybo··on Coinbase Announces Listing Date of Its Stock on the Nasdaq
This sounds like a case of blaming the user for poor UX design. If the users that the system is designed for are constantly making the same "basic mistakes", then the system isn't designed well for them.
gibybo··on The Kilobyte’s Gambit
Oh I didn't realize they depended on the device they were running on, that's too bad :(

I can reliably beat the 1100 bot and lose to the 1400 bot so they at least seem to be in the ballpark of matching my rating on the site for my hardware though.

gibybo··on The Kilobyte’s Gambit
It took me 4 tries to beat it, and I have a rating of 1300 on lichess.org and 1100 on chess.com.

In an effort to guestimate its strength a little more accurately, I had it play the first 4 levels of bots on lichess.org. It comfortably beat the level 3 (1400) bot and got crushed by the level 4 (1700) bot. Combined with beating me 3-1, I would estimate its lichess equivalent Elo rating to be somewhere in the 1400-1500 range.

gibybo··on I don't know, Timmy, being God is a big responsibility (2007)
>We can think about "what" the initial state is ? Is that initial state self contained ? or was it under effect of something else ? Will the computer "generate" the initial state, or the programmer (aka god) has to explicitly hard code it carefully to create an apparent stable universe ?

They have infinite computing power, just simulate all possible initial states?

gibybo··on Starlink is now Accepting General Pre-orders
>25/5Mbps satellite circuit

>data cap of 80 / 150 MB

So if you had the full 25 mbps available, you would hit your peak cap in 26 seconds? Do you only use it for email/text based applications?

gibybo··on FDA approves first monthly injectable to treat HIV infection
>Pharmacy is about 10% of total healthcare costs

That's good to know and something I've been curious about. Do you have a source that breaks down the other 90%?

gibybo··on Amazon.com Announces First Quarter Results
>Ask your representatives to make stronger labor laws.

Lawmakers don't do things when one person asks, they need significant public pressure. Publicly showing displeasure with how a company operates is usually the first step for that.

gibybo··on After 50 years of effort, researchers made silicon emit light
I thought electric charge in conductors already moved very close to C? https://en.wikipedia.org/wiki/Speed_of_electricity
gibybo··on Body Camera Once Again Catches an NYPD Officer Planting Drugs in Someone's Car
Out of curiosity, how would you prove you didn't give consent? Can't the cop just say you did?
gibybo··on A Man Who Saw the Pandemic Coming
If you are quarantined, your food selection may be severely restricted. I'm sure you'll be able to get food, but it may not be the food you normally like to eat.

Additionally, if the virus is rampant in your area, you may not wish to go to grocery stores and risk exposing yourself.

gibybo··on Kodak Alaris warns the TSA's new airport CT scanners can damage undeveloped film
Not a single wafer, but the sensor built for the Large Synoptic Survey Telescope is a ~64x64cm 3.2-gigapixel CCD, made of 189 4x4cm chips on the same sensor bed[0].

I suspect the cost was in the millions of dollars for the one-of-a-kind sensor, but I bet you could get a great deal on a second one since they've already done the R&D!

[0]https://en.wikipedia.org/wiki/Vera_C._Rubin_Observatory#Came...

gibybo··on SpaceX tests black satellite to reduce ‘megaconstellation’ threat to astronomy
Sure it's not without cost, but in most cases the cost is not very high.

Remember you don't need to throw away the whole frame, only the pixels that were obstructed. One track across a frame will obstruct less than 1% of the data in that frame.

gibybo··on SpaceX tests black satellite to reduce ‘megaconstellation’ threat to astronomy
Absolutely, in fact it's pretty easy and is routinely done by amateur and professional astronomers alike. We've had satellites, airplanes, and meteors obstructing astronomical images ever since we began taking them.

A very simple and common way is to stack all of the static images aligned on top of each other such that you have a set of values for each pixel corresponding to the same region of sky. Then sort the values of each pixel by brightness and keep the median value for that pixel. Or throw out that top and bottom 10% and average the rest, or throw out the top and bottom N, etc.

This is a standard feature of essentially all astronomical image processing software and has been for a long time.

gibybo··on Medieval Price List
Why did the factory owners pay for (or at least allow) those sorts of books to be read? Wouldn't they view it as against their interests?
gibybo··on The impact of direct air carbon capture on climate change
> extracting carbon from the air always takes more energy that was gained by burning the fossil fuel to make that carbon.

This sounds true at first glance, but is it always? It seems like it's obviously true for simple reactions like burning methane and converting it back to methane since the energy you get from it is equal to or less than the energy required to turn it back into methane, but might there be some other chemical reactions where you can turn it into something less energetic than the molecule it came from?

gibybo··on Renaissance Technologies
A pump and dump relies on manipulating others. In this scenario, the goal of the buying/selling patterns is not to manipulate the market into believing the price of the asset is something different, but just as a mechanism for transferring money between the funds.

It's also just a simple example of how it can be done. Many assets and derivatives are correlated to each other in the market in various ways. Their correlations can be exploited to allow you to do the same thing using an arbitrarily complicated set of assets instead of just one.

Some trades are required to be public, but the majority aren't. It wouldn't be too hard to hide the transfers in trades that don't need to be public.

gibybo··on Renaissance Technologies
It assumes an efficient-market. The money is coming at the expense of fund B. It doesn't need to be a consistent loser, it just needs to make less than it otherwise would on average.

People invest in funds that under perform the market all the time. That describes the majority of the finance industry.

gibybo··on Renaissance Technologies
Well reports are that the Medallion Fund is capped at $10B with a 66% annual return before fees and a 39% annual return after fees, so the other funds would need to underperform by an average of at least $3.9B per year. If we include the fees in the performance (it's not clear to me that we should, since it's just an accounting measure that RenTec claims to pay itself) then it's at least $6.6B.

Wikipedia says RenTec AUM is $110B. $10B for the Medallion Fund leaves $100B for the other two. So they would need to underperform by either >3.9% or >6.6%. I have had trouble finding exact numbers for those funds, so I can't determine if that's really the case or not.

However, this assumes RenTec is unable to beat the market at all. Maybe they really can beat it, but by only 2-3% per year. They can still funnel that outperformance into the smaller fund to turn it into 66%/39%.

gibybo··on Renaissance Technologies
Thanks, I didn't know that. Do you know if there were any other funds by him at the time? I could also create a dozen funds that do randomly different things and just close the ones that didn't do well to get me started.
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