Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Veritasium" channel.

  1. I misunderstood the start of your comment to mean that you had IQ 71 in your latest IQ test, not as 71 years old. As a result, I was wondering that you're writing flawless English and switched to computer programming despite such a low IQ result.
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  2. It's a damn shame that the leadership in Nichia seemed to had vanity pride instead of willingness to improve. I guess it goes well with the Japanese work culture where the "boss is always right" and nobody is allowed to question any decision the boss makes and nobody is even allowed to deliver any bad news to the boss. If you deny all negative feedback, how do you think you can ever understand the reality correctly?
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  3. So this is how life based on Intelligent Design would really look like.
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  4. Great video! I didn't know that the energy from the avalanche was enough to partially melt the snow but it indeed explains why it's next to impossible to get out from the snow after getting buried into the snow. Of course, if you're buried deep, snow weights at least 100 kg per 1 m³ so being buried a couple meters deep would keep you in place even if it didn't re-freeze.
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  5. I think you missed to opportunity to make this video 37 minutes long.
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  6. I think the way you introduced the older clip around 10:42 made it appear that you're going to explain some additional details that were not explained in the previous video. However, it turned out to be just the same clip without any additional explanations. It would have been nice to say before the clip that you'll not comment about it any further.
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  7. Superb video as usual!
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  8. You should repeat this demonstration in a freezer because one could argue that this was about metallic string tranferring heat from the room into the ice and the melting of the ice happened around the string because of that. And obviously the water will freeze again after the string has gone away because there's a big block of ice nearby. If the room had been below 0 °C this cannot happen because the whole string would have been sub zero for the whole experience. I see you already did this: https://youtu.be/qQCVnjGUv24
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  9. So, if you're on board of a really fast spaceship and turn on your average flashlight, the emitted light to observer in rest will look like gamma radiation, right?
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  10. I definitely recommend watching the Cosmos series hosted by Neil deGrasse Tyson.
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  11. It's important to understand that when man went to the moon, we still didn't have a technology to fully store the analog video sent back to the earth. And we have practically lost the abilitity to go to the moon and yet anybody can record 4K video today.
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  12. The pale blue dot speech is always a nice thing to include in any video. I think it would have been worthwhile the include the next paragraph, too, about fighting against other people for temporary control of a small corner of the pale blue dot. If we teach the next generation nothing more than basic math, reading, writing and full understanding of the pale blue dot speech, the next generation will be much better than the previous one.
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  13. Yeah, imagine the amount of shaking after your first day of work.
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  14. Great video! I would liked to see some mention about how though this metal is and how much friction you can get without having rubber on the surface.
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  15. I think that's actually hysteric laugh caused by the fear. If that snake were to bite Zac causing his grip to release, he would be the next one in the line.
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  16. Hydrogen is not going to fly because hydrogen is too hard to produce which causes overall effiency of hydrogen be lower than charging and discharging Li-on batteries. Hydrogen may be used for rural areas because pumping hydrogen is faster than charging batteries but it will not be the big picture.
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  17. 8:18 Nice camera trick!
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  18. According to the info I could find, you would need ridiculous heavy weights to cut ice colder than -3.5 °C using this method assuming the air temperature outside the ice is also -3.5  °C or lower. And if you try to hang e.g. 100 kg weights to that tiny wire, it will snap for sure.
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  19.  @josephbrennan370  Netflix used to have Cosmos: A Spacetime Odyssey but it wasn't their original series.
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  20.  @vorname1485  I think the original response was about the fact that Netflix probably wouldn't finance creating such a science series. They might just distribute it if it turns good.
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  21. I think that the rated voting system (approval voting) is simple to understand but it would result in strategic voting because if you have one good candidate X and one barely acceptable candidate Y, you don't want to select X+Y in the election because that would give too much power to Y. Many would rather just vote for X to avoid ending getting Y selected in case it would be the logically 2nd best option for many people but never the best option for anybody. If you actually wanted to have regression to mean though, this would be the way to go. I'd rather want a voting system that can switch to radically different candidate if majority of the people voted for him or her. It seems to me that the least bad option would be to use Condorcet voting system with Schulze ranking. The bad part of that system is that it's next to impossible to easily calculate by hand. In practice, we would need to use computers to calculate the initial result and hand calculation could be later used to confirm the result. However, you wouldn't need to trust random computer but every interested voter could take the whole list of votes (this would obviously need to be public) and run the program of their choice on a computer of their choice to verify the official voting results.
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  22. I'm actually a halfer but I clicked "like" anyway because I'm trying to train the algorithm for my preferences correctly. The the sleeping beauty question, I understood the question as "what's probability for the coin toss result for this wakeup" and for that, the probability must definitely be 50%.
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  23. The search for Mersenne primes (the program called prime95) has provided us the best known software to verify your system is stable. The software has "torture test" mode which re-computes some of the really hard tests with known results and if your system fails to compute the exact same result, there's something wrong with it. The interesting part is that a single bit error in any part of your system will result in incorrect result and the computation can be configured to require as much RAM as you wish. As a result, if you configure it to use all the RAM in the system and it can successfully compute many numbers, your system is running bit perfect. And if you test it with any overclocked system, the changes are that the system is not bit perfect. Overclockers call system "prime-stable" when it can run prime95 torture test for 24 hours without any errors. So you could argue that this weird mathematical process has already provided us the best known method for verifying computer hardware correctness! As a bonus, the software is so well optimized that it can typically generate maximum heat for the CPU thanks to running on all parts of the CPU in parallel. As a result, it will also test the cooling solution of your computer in addition to checking it's running bit perfect.
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  24. I think they should introduce a bridge or two to the track to make the map making part much harder because true 2D algorithm wouldn't be good enough anymore. Of course, that would require setting max height for the mouse to make it fit under the bridge.
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  25. [insert standing ovation emoji here once it's released]
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  26. My thoughts exactly! I remember listening a lecture about FFT during my university studies and the teacher could as well not be there because the way he tried to teach it provided zero value. If this video had existed then, I could have watched this video just once and understood in less than 20 minutes the whole thing.
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  27. I wish you had deinterlaced the video clips used in the intro. Some of those clips had hideous combing artifacts because of using interlaced video clips mixed within progressive video. You should use something like FFMPEG "bwdif" algorithm or better. Other than that technical issue, great work as again!
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  28. Moving into headwind is obviously possible but not with this exact same design because this design requires that the vehicle can move slower than wind into downwind even if the propeller is anchored in place. Here's a very simple setup for moving directly into headwind: imagine a wind power station mounted on top of a tank where the tank has an electric motor. The wind is used to generate electricity which is then used to move tank. It's obvious that the tank can move (slowly) to any direction as long as the windmill is rotating. In this case, too, the tank is hold by the friction and the windmill extracts the power from wind movement relative to ground.
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  29. I think the "pivotal voter" example is an artifial problem that doesn't happen in reality. It basically argues that if the voting results were otherwise perfectly tied, there must not be a new ballot that tips the balance one way or another because the voter with the new ballot could be declared as "dictator" because it broke the tie. If you want to avoid nearly arbitrary results for near perfect ties, just compute the pairwise ranking between the resulting ranking and if the winner doesn't win with at least 1% margin, organize a new round of voting. This would force another round of voting until enough people adjust their ballots so that at least 1% margin between the best and second best candidate can be found. The change of resulting in more than two rounds would be practically zero with real world humans as the voters as long as you make the results of previous round public.
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  30. See also: https://www.ted.com/talks/nick_bostrom_what_happens_when_our_computers_get_smarter_than_we_are
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  31. Such a vaccine is called "education". It turns out that the people that would most benefit from such a vaccine are denialists that will avoid it in any case.
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  32. To me James Clerk Maxwell is even more important than Einstein. As far as I know, Special Relativity and General Relativity directly follows from Maxwell's equations when you apply the single assumption that time is relative and speed of light is always contant. Obviously, that's a pretty bold assumption to do and you have to solve lots of complex math about the results which is where Einstein did most of the work. It could have been turned out that the universe doesn't work that way and the bold assumption is not true, but luckily for Einstein, his assumption was the correct one.
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  33.  Science Revolution  Walk away from the computer and breath. You might have your brain overheating slightly. Photon is not a particle in sense that you could stop it and measure its mass. However, some effects that photons cause to matter behave like it were a particle. And some other effects behave like it was a wave instead. This is called wave particle duality. For more information, see https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality As for the stars and galaxies billions of light years away - we don't know if they still exist or not. There's no known reason to believe that they wouldn't still exist but if something happened to them say 100 million years ago, we still wouldn't know about it because according to Einstein, there's no way any information can travel such distances faster than light.
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  34.  @TeguhNugrahaPratama  It's also interesting to note that Maxwell was able to correctly measure the speed of electromagnetic force fields caused by electricity and it was only much later figured out that light is actually electromagnetic radiation, too.
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  35. Except that origami is like texture unwrap with zero seams allowed and no strecthing either.
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  36. Yet another example about why patents and copyrights are detrimental to society.
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  37.  @leftear99  What kind of lifespan do you think would be good for society? It's clear that the current 75–150 years for the copyright and 20 years for a patent is way too long and just hinders innovation but I have trouble imagining that even short timeframes would improve things. If we both agree that the current time periods are problematic, why do you think a shorter but still fixed timeframe would be better than zero timeframe?
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  38.  @leftear99  Sure, but you could create content and inventions that we currently based on pre-arranged contracts. Electrician is not going to randomly build stuff in my house and then request payment from me after the fact when I try to use the installed wires. Instead, I agree on payment with the electrician before he or she starts the work. I see no reason why creative work wouldn't work the same. (And as an another example I'm writing software for living and I know I get paid before starting the actual work.) As such, there's no need for altruism to create stuff even if copyright nor patents existed. The modern business models have been created based on copyright and patents but it seems to me that this solution (copyright + patents) causes more problems than it provides good. The only big question is how to convert to better system without collapsing too many businesses?
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  39.  @jesperlett  I think it would be incorrect to say that slipperyness of ice has "nothing to do with pressure". Surely the pressure also helps when the temperature range is between 0 °C and -3.5 °C but outside that range, the pressure alone does very little.
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  40.  @ExtantFrodo2  Don't trust GSM (or any other public phone standard) to connect phonecalls or text messages correctly and never ever trust the caller id for phonecalls nor text messages. How do we communicate over untrusted network called the Internet? With encryption on top of the untrusted data transmission channel. When you use something with end-to-end encryption, you'll be safe. Something like Signal or Whatsapp (assuming you can trust FISA secret court order has not been forced Whatsapp to install backdoor to your phone) would be safe. This is why some countries are actively trying to ban encryption from their citizens. That would prevent them from controlling/monitoring your communication channel over phone at will.
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  41. I think a great way to think about possible roadblocks in your job is to stop, think about two possible solutions for it and then go to your manager to ask if either one would be a good solution and ask them to explain why. This accomplish two things: you communicate to your manager that you can invent solutions by yourself and you can validate your own solutions. At first, it might be that you fail pretty often but once you do this for a little time you'll notice that your solutions might actually get better than what your manager could have come up with.
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  42. I think the speed of light must be at least very nearly symmetrical because otherwise cosmic background radiation should be skewed towards the direction of slower speed of light.
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  43. Great video! Definitely in top 3 of all the videos you've done this far!
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  44. See also: https://youtu.be/sCuKuUgNfjA
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  45. Would it be possible to use protective gloves and clothing while handling those highly dangerous snakes? I think we have materials that would withstand the teeth of the snake.
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  46. If you want to find more about sidereal day and Earth movement, try video called "How Earth Moves" by Vsauce.
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  47. See also: https://xkcd.com/1877/
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  48. For more details about USB superposition, see https://www.reddit.com/r/ProgrammerHumor/comments/226qum/usb_superposition/
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  49. It's often easy to forget that in long timescales, DNA is more permanent than rocks. And that's because it self-replicates.
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  50. 11:15 Imagine building 1000x heavier jumper that still pushes 300g to the launch point during the jump. I would guess that the jump surface would need to be made out of hardened steel plate on a concrete platform.
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