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AlexanderTheGr8

550 karma · joined July 14, 2021

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AlexanderTheGr8··on You can't tell people anything (2004)
This reminds me of Steve Jobs saying that people don't know what they want until you give it to them. To me, sometimes, it sounds a bit arrogant but definitely true in my experience. I would never have seen the value in an expensive fragile small-computer with a tiny screen that you have to squint to see until I actually used one.
AlexanderTheGr8··on DOJ Preps Antitrust Suit to Block Adobe’s $20B Figma Deal
I would not be surprised if Adobe intentionally added monopolistic terms to their deal with Figma or acted that the deal was monopolistic in front of antitrust officials in the hope that they might block the deal, considering that they are paying $20B for something that, in today's market, is worth way less than that.

If I am not mistaken, the fact that DOJ is preparing a suit means that the deal will not go through for at least a year or more, so Adobe can delay paying. They can also, intentionally, perform poorly in court to let DOJ get an easy win and avoid paying Figma.

In my opinion, the only losing party in this story is Figma. Adobe gets a chance to back out and DOJ gets a chance at an easy win. I am surprised FTC didn't jump on this, considering they are looking for wins, after their weak lawsuit against Meta's acquisition of Within.

AlexanderTheGr8··on Ask HN: Those making $0/month or less on side projects – Show and tell
Semantic search for any video : https://semanticvideosearch.com/

As the name suggests, this allows you to search any video using meaning and context. This is very useful for skipping through the fluff on youtube videos.

AlexanderTheGr8··on Tell HN: Whole Yandex Git repository leaked
I never realized that reverse image search was so bad because of regulations. Can you give me some more context about which regulations affect google reverse image search and why?
AlexanderTheGr8··on Tell HN: It is impossible to disable Google 2FA using backup codes
Wait, they have the authority to block your google auth app? Last I checked, the app is not connected to your google account. And the app's functionality is open source (TOTP). So how does enforcement work?
AlexanderTheGr8··on Sam Bankman-Fried's secret 'backdoor' discovered, FTX lawyer says
This reminds of the book Dark Forest in the series 3 body problem

Spoiler Alert : In this book, a character invents a way to impart any belief into your mind. So if you read "water is poisonous" while in the MRI-type machine, your brain will completely believe that water is poisonous. The intention was for people to believe that they can win against the technologically superior aliens.

But the character made a one character change (+ to -) to modify the machine to make a person believe the opposite. So "humans will 100% win against aliens" became "humans will 100% lose against aliens"

Very interesting idea.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
tbh I never really understood that conversation. TARS is a machine and if it's impossible from an advanced machine's standpoint, it's impossible from a physics standpoint. Cooper's maneuver was pretty simple that TARS should have been able to simulate and figure out.

Regardless, I agree that being multi-planetary is absolutely a requirement for humanity. We are too risky here. And the risk is not from outside. Humanity has survived for 100s of millions of years without as asteroid annihilating us, and I don't see it changing now).

The biggest risk to humanity is humanity. We will probably figure out a way to destroy ourselves, either with something much more powerful than nuclear bombs or some new unimaginable tech.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
Try this : https://en.wikipedia.org/wiki/Project_Daedalus

Also, I agree that the idea for interstellar travel has some holes. Let me rephrase my argument as follows : for every accomplishment of mankind (airplanes, spaceflight, moon landing, nuclear, computers, internet), there have been just as many critics claiming that it isn't possible (they had their own set of reasons). And all of these technologies were much more infeasible compared to interstellar travel (and yet we did that).

5 years ago, would you have imagined ChatGPT or Stable Diffusion? Tech moves fast. There is no doubt in my mind that in a century, we will see interstellar travel like we do airplanes today. But this may well be wishful thinking because I really want this to be true.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
Human hibernation should be able to solve that problem. I know I am asking for too many things but the challenges for the Apollo mission were even more extravagant.

They had to figure out how to launch from earth's gravity, go exactly to the moon, decelerate, land without accident, launch back again, go exactly to the earth, decelerate and land without accident. Atmospheric reentry is almost 25000 degree Celsius, hotter than almost anything we had ever experienced.

So, given a century, surely medicine will figure out hibernation. And then humans can continue their lifespan when they reach their destination.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
I used "they will think of something" as a all-encapsulating solution for what humanity will do in the next century. Predicting the next 10 yrs is almost impossible, let alone the next century.

Your example of hotels in orbit is an incorrect example. If humanity wanted to build a hotel in orbit, we would have a hotel in space (we already have a crappy hotel - ISS). I don't consider Hilton's incompetence to represent humanity's incompetence.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
> A century ago we DEFINITELY conceived of visiting a divine body. 121 years ago a science fiction movie about landing on the moon was released, based on a scifi book released _158_ years ago.

I said "almost everyone". If you go to 1920s and ask a million people if humanity will be able to walk on the moon within their lifetimes, not a single one would say yes. And yet, we were able to do it. Similarly, we have been conceiving of interstellar travel for decades.

> Try a few dozen thousand years, my dude

With constant acceleration, ship time is very different. With constant acceleration using controlled nuclear fusion, we can do it in less than a century. Project Orion is not constant acceleration. Now before you point out issues in constant acceleration, remember that if you were in 1920s, you (and I) would also point out issues in moon landing. How can humanity ever leave Earth's gravity, go accurately to the moon, decelerate, LAND without crashing, walk, LAUNCH from moon again, go accurately to the earth, handle extreme atmospheric temps, and LAND without crashing.

Well, we did all of that. So surely, given a century, we can figure out interstellar travel.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
you are right about this, but my argument is that we can do this if we want to. Whenever humanity set its sights on a big project such as Apollo or Manhattan, we have accomplished "impossible" things.
AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
There are huge swaths of interstellar dust (mostly hydrogen) which can be used to slow the probe down.

If not, then we can use a galaxy's resources to slow us down. Basically a complex version of planetary-slingshot.

My argument is, given a century, we are likely to be able to find some way to decelerate. Consider our accomplishments in the last century (airflight, spaceflight, computers, nuclear, internet)

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
With the assumption that interstellar travel is trivial for a sufficiently advanced civilization, Fermi Paradox becomes a true problem. The best solution for Fermi Parafox, in my opinion, is interstellar travel being impossible.

I don't think Dark Forest is possible because consider how different our thought process is from any other life form on Earth. And due to butterfly effect, every civilization's thinking will be completely different. The chances that every civilization will converge their thinking into dark forest seems impossible. Some stupid civilization is bound to broadcast their existence and location. Some other stupid civ might try to control all galaxies using self-replication (exponential growth). So we should have seen some such sign (considering how many alien civs are likely to be there)

Great Filter is another possibility. But it feels unlikely : there are trillions (10^12) of galaxies and trillions (10^12) of planets in each galaxy. So a total of 10^24 (1,000,000,000,000,000,000,000,000) planets out there. Consider the number of civilizations. Is it possible for every single advanced civilization to be destroyed by the Great Filter? If it is, then it must be one hell of a filter. I am very excited to find out what it is, if it happens in my lifetime.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
what is magical thinking? Interstellar travel being possible or impossible?
AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
> low availability of fuel

Isn't hydrogen one of the most common elements in the universe? And nuclear fusion needs only hydrogen (technically deuterium and tritium, but where there's hydrogen, deuterium and tritium will also be there)

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
I skipped over deceleration because 1) our probes can transmit something significant about a galaxy even at that speed and 2) over time, we can probably figure out a way to decelerate using a galaxy's natural resources (similar to how we use a planet's gravity for slingshot)

Surely, given a century, our scientists will figure out something.

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
[1]> According to wikipedia, interstellar travel at 1G would take approximately 1 year + the distance in lightyears. Proxima Centauri (4.2 light years) for example would take 5.2 years.

This^ is from the traveller's standpoint. I am not completely sure about how long it would take from the perspective of someone on Earth. But this definitely seems plausible if we can solve the other problems with constant acceleration such as sufficient fuel and protection from interstellar dust (at close to light speed, dust would hit with unimaginable force).

[1] https://space.stackexchange.com/questions/840/how-fast-will-...

AlexanderTheGr8··on 'Oumuamua: An analysis of the debate regarding the first interstellar visitor
Slightly off-topic but I find it incredible that people in the comments think interstellar travel is impossible (or almost impossible)

A couple centuries ago, the brightest minds thought that humans flying in the air would take a million years. How can humans travel to the other part of the earth within a month? Today, it takes 16 hours (4 of which are airport security).

A century ago, almost everyone thought that stepping on a divine body like the moon is absolutely impossible for humanity. We did it less than 80 years after inventing aircrafts.

A century ago, everyone thought it was impossible to fling a tiny device to blow up an entire city. Hiroshima and Nagasaki...

Now, we think that it would be impossible to travel very long distances in space. Well, this challenge seems a piece of cake compared to flying in the air, walking on the moon, or generating unimaginable energy from atoms.

My layman solution to interstellar travel is constant acceleration using controlled nuclear fusion. We can use interstellar dust for necessary matter for our nuclear fusion (lots of hydrogen in interstellar dust). Even if we can't use interstellar dust while travelling, we can certainly carry enough from our solar system.

I read somewhere (don't remember where) that if a ship constantly accelerates in space, it can reach another star system in a few decades and another galaxy in less than a century.

It's definitely a trivial challenge for humanity compared to what we have accomplished in the last 2 centuries. What do you think?

AlexanderTheGr8··on Caroline Ellison Plea Hearing Transcript (12/19/2022) [pdf]
> So even if you did nothing or said nothing at trial, you could not be convicted unless a jury of 12 people agreed unanimously that you are guilty

They need to unanimously agree? So, one bad/corrupt juror could render anyone not guilty?

I thought it would be majority or 3/4 majority (as they do for some bills in parliament). Unanimous seems pretty risky.

AlexanderTheGr8··on Show HN: Semantic search for video
60 sec segments with 30 sec overlap window seems to work quite well for me but YMMV
AlexanderTheGr8··on Show HN: Semantic search for video
Lol same. So I decided to finally make it over new years.
AlexanderTheGr8··on Show HN: Semantic search for video
Cool project!
AlexanderTheGr8··on Show HN: Semantic search for video
I love to talk about this stuff as well. My stack is video -> extract audio -> whisper for transcript -> break it into segments -> create embddings for each segment -> get query from user -> get query embeddings -> compare and show the best results

There are a couple other tricks I use such as an overlap window for segments and a little post-processing for better results from the comparisons; but overall, this is the gist of it.

An issue with this approach is that ques-ans doesn't work as well as I'd like bec question and answer don't necessarily have similar embeddings ("What's the dog doing?", "He's sleeping" can be 2 completely independent sentences). So I would love to investigate more into Flan-T5 for this.

I am "AlexanderTheGreat#9743" on Discord if you want to discuss more.

AlexanderTheGr8··on Show HN: Semantic search for video
Very cool work. It supports lots of videos/playlists. I presume you are using FAISS or something for vector lookups?
AlexanderTheGr8··on Show HN: Semantic search for video
No gpt3. Embeddings alone can be used for semantic search.
AlexanderTheGr8··on Show HN: Semantic search for video
I think that google thinks that it's not worth it. They could believe that videos don't have as much relevant information as text. Or if videos do have more information, it's not worth it to try to spend so much compute for it.

Plus large scale retrieval of video information is pretty challenging (even for them). Facebook had to create a new framework (FAISS) to solve this problem. So I presume it must be pretty challenging.

But on a short scale, they already do this. For some queries, in the search results, they show a youtube link which automatically goes to the relevant part of the video.

AlexanderTheGr8··on Show HN: Semantic search for video
Thanks a lot for the reply.

1. I couldn't agree more. The only issue is transcribing the video. Everything else can be done for hour long videos. I was thinking about pushing transcribing on the user's browser, if possible.

2. Good point. Tbh I didn't even know about these platforms. Similarly, spotify and apple podcasts should also be covered. An issue with these platforms is that they may not have a good way to get the video from the platform (unlike youtube's yt-dlp). But in the long run, it can be covered.

3. Will add SSL soon.

Yes, groups would be very helpful. Another way to look at it would be channels on youtube/other-services. I plan on preprocessing most major channels among all services. For channels/set-of-videos not preprocessed, the only option would be asking user to pay for the compute (because the other option of transcribing on the user's browser won't work for groups of videos)

I will try to add more relevant features, especially the one about longer videos and collection of videos.

Thanks a lot!

AlexanderTheGr8··on Show HN: Semantic search for video
sorry about that. Should work now. Was facing some compute issues.
AlexanderTheGr8··on Show HN: Semantic search for video
I am semantically searching within 1 video only.
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